Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e97992bc8a808d8…

MALICIOUS

PDF

71.6 KB Created: 2020-11-18 12:23:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f370a2eb4f6e0d57b0924e10fa29a482 SHA-1: 59259f58b0e6cad57637475a293c83523cc81d72 SHA-256: 5e97992bc8a808d8f8ea614b9204ac25276623b5cec3a6dbcb916dd5276692a3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, a common tactic for SEO poisoning or phishing campaigns. One prominent URL, 'https://trafffe.ru/aws?utm_term=whatsapp+free++for+nokia+asha+501', suggests a lure related to free software. The ClamAV detection and ML classifier flagging indicate malicious intent, likely to redirect users to a phishing or malware distribution site. No scripts were extracted, but the PDF structure itself is indicative of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7612

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafffe.ru/aws?utm_term=whatsapp+free++for+nokia+asha+501
    • https://rozazokosu.weebly.com/uploads/1/3/0/8/130813972/5233133.pdf
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f88bc7255b9c.pdf
    • https://cdn-cms.f-static.net/uploads/4380890/normal_5f96c3a97202f.pdf
    • https://kigefewapese.weebly.com/uploads/1/3/4/5/134528385/bosusegeforexapoki.pdf
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/sutudotuvunekor.pdf
    • https://fitijozis.weebly.com/uploads/1/3/4/3/134372299/de30002.pdf
    • https://lurenejaxerugu.weebly.com/uploads/1/3/4/7/134728533/wivojumuleled-biwigujutozi-dadavosugoxabi.pdf
    • https://uploads.strikinglycdn.com/files/7bb9d2b3-e710-4240-bd6c-3a137c6a7bbc/doguzijelov.pdf
    • https://uploads.strikinglycdn.com/files/91040406-72c5-4110-8bcb-098a0e5dfa49/82863514723.pdf
    • https://s3.amazonaws.com/ruzumeb/82296262126.pdf
    • https://s3.amazonaws.com/senodiw/castle_rock_rec_center_classes.pdf
    • https://s3.amazonaws.com/tixedujegibex/words_that_begin_with_what.pdf
    • https://uploads.strikinglycdn.com/files/770f660a-b03a-4f2f-abce-f8e450fb9028/technology_of_cereals.pdf
    • https://uploads.strikinglycdn.com/files/8138b2c8-a209-470d-a270-d98d1977cb49/vodujevisuku.pdf
    • https://uploads.strikinglycdn.com/files/628fc532-6d15-4fb7-939f-ce7045aeee29/poe_delve_primeval_chamber.pdf
    • https://uploads.strikinglycdn.com/files/3c452fae-1de8-4d99-825c-17d9a37af188/13469507869.pdf

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