Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ce3c9bbe604985…

MALICIOUS

PDF

41.4 KB Created: 2021-02-10 04:14:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 721eb04fc4f0aab159cbac1dc8406b60 SHA-1: 14168254ae31ef4bf1ede47567005e432992c995 SHA-256: d6ce3c9bbe6049859a0c408fb6f1536232ecc752fcd070f42ffa9c65874ff19b
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9297

Heuristics 5

  • 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 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/aws?utm_term=graphic+design++free+vector+cdr+files PDF link annotation
    • http://natgood.space/suxubozoxuzotabulak237if.pdfIn PDF document text
    • http://ledimpress.biz/bodozi7r931.pdfIn PDF document text
    • http://koteyarn.moscow/lumineers_ophelia_sheet_musickjwvw.pdfIn PDF document text
    • https://severuzilun.weebly.com/uploads/1/3/4/7/134710190/sigegonexuz.pdfIn PDF document text
    • https://cdn.sqhk.co/kerametunal/dLXhi9u/wood_mobile_phone_wallpaper_hd_download.pdfIn PDF document text
    • https://muluxadi.weebly.com/uploads/1/3/1/4/131453645/ladojumuxovanet-pasagiwoxunotoj-dejefif.pdfIn PDF document text
    • http://tiktoktop.design/34412121355eqjha.pdfIn PDF document text
    • https://dugepawegozil.weebly.com/uploads/1/3/1/6/131606694/3aeecbcccf7a009.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/6177758988.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/52747744602.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/desolation_wilderness_fishing_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/education_responsive_html_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/48996336195.pdfIn PDF document text

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