Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d56b0f37fe72b96…

MALICIOUS

PDF

52.6 KB Created: 2020-11-25 19:14:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d916a7b2e449f5353420246410d92019 SHA-1: afa310fa71fcc9a750be929bd0d39be29799d1ee SHA-256: 3d56b0f37fe72b9687642a83b182dbdd158da483c1623bf59e7fb206b1924f7b
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to Weebly and Strikingly hosted PDFs, indicating a link farm or SEO spamming operation. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to phishing sites or download further malicious content. No scripts were extracted, but the PDF structure itself is indicative of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6584

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://trafftec.ru/strik?utm_term=san+felipe+baja+california+resorts PDF link annotation
    • https://komamopiragi.weebly.com/uploads/1/3/4/4/134444029/5fac9d27.pdfIn PDF document text
    • https://pisanofinupu.weebly.com/uploads/1/3/1/4/131437881/linabukoburamezexu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423460/normal_5fa04f515ba4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417519/normal_5f97d5b9ee325.pdfIn PDF document text
    • https://vomediwanuxorat.weebly.com/uploads/1/3/4/3/134327005/ce9cc4d.pdfIn PDF document text
    • https://morurotefat.weebly.com/uploads/1/3/4/3/134317018/7c6b986526c.pdfIn PDF document text
    • https://keguvetazako.weebly.com/uploads/1/3/4/7/134702613/muduwotujirol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390663/normal_5f91db3b0285e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382430/normal_5f92517834985.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457008/normal_5fa5367b27d8b.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a408ab4e-8593-4ded-800a-7a35a06584df/wizekejot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77fc7cff-d91e-4b92-bdd5-f350c73a29f2/tulozer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5e38462-b904-4cd0-aee5-dfd1003d891b/tijadatabidisudug.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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