MALICIOUS — adb22a75b80.pdf

MALICIOUS — adb22a75b80.pdf is a pdf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (70/100). 3 of 53 detection engines flagged it.

Identification

• SHA-256: b7f6be1579ea9fde5f8ef58555251d98fe6a3f82bc26277af2241c24a7be0cf9
• SHA-1: 6d8f3a3593c6a04403a0ad45e547e4451d7462b6
• MD5: f93d711fe81fa2c70d2c494c02cc006a
• ssdeep: 768:FgGzpDvpavjZ4ksJcRSM2xeQglROssBIMrdpHurYjlYhROLBr8uzjTzyKQsxCPsc:WGFDpW1n8Jr/VxYfOLvzTyfnPsUwtw
• TLSH: T15433BFF750A7ED8C7ECB8F176CBA10A9544AD648A03797A004C87B6CC4BC6FD6E51860
• Submitted as: adb22a75b80.pdf
• File type: pdf · Size: 50195 bytes
• Verdict: malicious (70/100)

Detections (3 of 53 engines)

• MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
• Emsisoft (Emergency Kit): PDF.Spam.Heur.1
• Kaspersky (KVRT): UDS:Trojan.PDF.SBadur.gen

Why this verdict

The malicious score of 70/100 is the fusion of 4 weighted signals:

• Emsisoft (Emergency Kit) flagged PDF.Spam.Heur.1 (rule PDF.Spam.Heur.1) - engine signal, weight 0.55, confidence 0.85
• Embedded network infrastructure: https://cctraff.ru/wb?keyword=pdf%20reader%20and%20editor%20free%20download%20for%20windows%207, https://cdn-cms.f-static.net/uploads/4384655/normal_5f8ce5782159d.pdf, https://cdn-cms.f-static.net/uploads/4369775/normal_5f8f50b51cb72.pdf - static signal, weight 0.35, confidence 0.60
• Document active content: uri-action - static signal, weight 0.30, confidence 0.60
• Packing/obfuscation: high-entropy-blob - static signal, weight 0.25, confidence 0.55

Dynamic analysis

No runtime behaviour was captured for this sample, so the analysis above is static only. That is a limit of this run rather than evidence the sample does nothing.

Embedded URLs

• https://cctraff.ru/wb?keyword=pdf%20reader%20and%20editor%20free%20download%20for%20windows%207
• https://cdn-cms.f-static.net/uploads/4384655/normal_5f8ce5782159d.pdf
• https://cdn-cms.f-static.net/uploads/4369775/normal_5f8f50b51cb72.pdf
• https://cdn-cms.f-static.net/uploads/4366321/normal_5f8f934641966.pdf
• https://cdn-cms.f-static.net/uploads/4377674/normal_5f8dc4d170518.pdf
• https://cdn-cms.f-static.net/uploads/4366949/normal_5f8865ffcd459.pdf
• https://cdn-cms.f-static.net/uploads/4369671/normal_5f91b50fa00f4.pdf
• https://s3.amazonaws.com/fekazudabo/causas_y_consecuencias_del_bullying_escolar.pdf
• https://s3.amazonaws.com/lekizopiloref/mazew.pdf
• https://s3.amazonaws.com/zetare/bsc_2nd_year_maths_book_free_download.pdf
• https://uploads.strikinglycdn.com/files/ec448ee1-7623-462c-a92c-3db8ab1eb0e5/nitutigogato.pdf
• https://uploads.strikinglycdn.com/files/a691ece2-98ce-420f-8649-bb81fd356396/lanugiragosetexi.pdf
• https://cdn-cms.f-static.net/uploads/4383805/normal_5f8c0fead7ac3.pdf
• https://cdn-cms.f-static.net/uploads/4372702/normal_5f8dbf87b0af1.pdf
• https://cdn-cms.f-static.net/uploads/4372721/normal_5f8e994aeebd2.pdf
• https://cdn-cms.f-static.net/uploads/4415767/normal_5f9749b031760.pdf
• https://cdn-cms.f-static.net/uploads/4406777/normal_5f9266926c72c.pdf
• http://www.w3.org/1999/02/22-rdf-syntax-ns#
• http://purl.org/dc/elements/1.1/
• http://ns.adobe.com/pdf/1.3/
• http://ns.adobe.com/xap/1.0/
• http://ns.adobe.com/xap/1.0/mm/
• http://ns.adobe.com/xap/1.0/rights/

Embedded domains

• cctraff.ru
• cdn-cms.f-static.net
• s3.amazonaws.com
• uploads.strikinglycdn.com
• www.w3.org
• purl.org
• ns.adobe.com

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report