Malicious PDF — malware analysis report

Static analysis result for SHA-256 32bbed179ab8fe7e…

MALICIOUS

PDF

37.6 KB Created: 2020-11-18 01:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc1c5f8aaeb56c3e083d9e1ddc27cbdf SHA-1: 57128975f35f1ea5f3a91c282ff41caf7117f0b8 SHA-256: 32bbed179ab8fe7e8514af8c4d6f63f9cc570b13392db4919ba55da66ba52125
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical of phishing campaigns. It contains a malicious redirector link pointing to 'traffmen.ru', which is flagged by multiple heuristics and ClamAV as malicious. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create such lures. The primary attack vector appears to be tricking the user into clicking the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6440

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 37 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://traffmen.ru/aws?utm_term=caulfield+primary+school+uniform
    • https://cdn-cms.f-static.net/uploads/4374002/normal_5f8ab835569d0.pdf
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/lafirokevezirukoja.pdf
    • https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/vixelob.pdf
    • https://cdn-cms.f-static.net/uploads/4406216/normal_5fa0f71a52ac5.pdf
    • https://cdn-cms.f-static.net/uploads/4446273/normal_5fa6a8f9993ce.pdf
    • https://titawijuneve.weebly.com/uploads/1/3/4/0/134012454/gutosadisoliti-ziviwusariwem-sumizem.pdf
    • https://cdn-cms.f-static.net/uploads/4420761/normal_5fa731d969db7.pdf
    • https://s3.amazonaws.com/minaxigevani/70196723913.pdf
    • https://s3.amazonaws.com/xapidajovaji/sasejelomig.pdf
    • https://s3.amazonaws.com/degisapemifa/dupadixepejerovep.pdf
    • https://s3.amazonaws.com/zafaro

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