Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1f332ace1a60ef…

MALICIOUS

PDF

39.6 KB Created: 2021-09-20 16:36:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: fcaed60d7394885834abe32b07d13082 SHA-1: ca280fcb7854a30b569b6cbf8952751d87836a08 SHA-256: be1f332ace1a60ef7a2061a6c5d4cc52907d7929d4d497fefae0e5a6d6e273ee
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. The 'PDF_IMAGE_LURE' heuristic indicates it presents as an image-only document with an action trigger, designed to trick users into clicking a link. Several heuristics point to the document being a link farm hosted on compromised or disposable domains, suggesting its primary purpose is to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9743

Heuristics 6

  • 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 39 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/39e324fa631343374b759451b0b881b6/putogetebepaj.pdf In PDF document text
    • http://hitecds.com/userfiles/file/zipugik.pdfIn PDF document text
    • http://saluteebenesseresas.it/userfiles/files/27925515707.pdfIn PDF document text
    • http://bluestandard.pl/ckfinder/userfiles/files/tawuxalutexavewa.pdfIn PDF document text
    • http://pes.edu.mn/ckfinder/userfiles/files/37700979606.pdfIn PDF document text
    • http://resortcrimea.com/ckfinder/userfiles/files/piforasafugit.pdfIn PDF document text
    • http://savitaco.com/uploads/images/files/mivumewe.pdfIn PDF document text
    • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/dugipodagefaledapefob.pdfIn PDF document text
    • http://challendor.com/fckeditor/upload/file/fukepem.pdfIn PDF document text
    • http://propertiesforrent.com/userfiles/file///54988377502.pdfIn PDF document text
    • https://sushixusa.com/userfiles/files/dodakoperorirefuvem.pdfIn PDF document text
    • http://giaydantuongphongngudep.com/images/news/file/lazid.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614114fc781ef---lebukimulisekafebuka.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/7fed653c284fd32d57ccfd1d8db1d6d2/sodomamijeduriso.pdfIn PDF document text
    • https://muratay.nl/userfiles/file/84049169024.pdfIn PDF document text
    • http://rowadhr.com/app/webroot/upload/files/borulerigepun.pdfIn PDF document text
    • http://aow.infogestnet.it/ckfinder/userfiles/files/penifebolo.pdfIn PDF document text
    • https://tonmathunglan.vn/upload/files/89623477256.pdfIn PDF document text
    • http://restavratorstvo.com/ckfinder/userfiles/files/80385570479.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=picasso+library+dependency+androidPDF link annotation

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