Malicious PDF — malware analysis report

Static analysis result for SHA-256 212dc000a0bac7eb…

MALICIOUS

PDF

49.6 KB Created: 2020-12-27 08:54:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dea93be5438557440ec5b481061a7ca2 SHA-1: 8ad542cf8405b01c8bc731c14ef6f2845c9281ed SHA-256: 212dc000a0bac7eba1c3893102ea6bd22378412f5689c252317e4cb5e2921736
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link. The heuristic 'PDF_IMAGE_LURE' indicates a common tactic where a screenshot is used to hide malicious actions. The presence of numerous external PDF links, including one to 'trafffe.ru', suggests an attempt to redirect users to potentially malicious content or phishing pages. While no scripts were explicitly extracted, the PDF structure and heuristics strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6502

Heuristics 5

  • 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-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 49 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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=carrion+comfort+analysis+pdf
    • https://cdn-cms.f-static.net/uploads/4368495/normal_5f9f93219e877.pdf
    • https://nonexivibofopuv.weebly.com/uploads/1/3/4/6/134603010/d50c6ce0cf9174.pdf
    • https://cdn-cms.f-static.net/uploads/4381528/normal_5f950795d2022.pdf
    • https://cdn-cms.f-static.net/uploads/4425910/normal_5fd229e91d953.pdf
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f9ba75eb85a5.pdf
    • https://liwevapazu.weebly.com/uploads/1/3/1/0/131071299/totemugoxu_vapotilewawes_pikumil.pdf
    • https://cdn-cms.f-static.net/uploads/4387806/normal_5fbcac240c5a5.pdf
    • https://selokifasafu.weebly.com/uploads/1/3/4/3/134383977/2b10597d86a1.pdf
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/261dc.pdf
    • https://s3.amazonaws.com/tobaziw/pedizaxapimix.pdf
    • https://s3.amazonaws.com/wiremeresegikon/rivaguragesadusizopazudub.pdf
    • https://s3.amazonaws.com/lazolu/62156845947.pdf

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