Malicious PDF — malware analysis report

Static analysis result for SHA-256 df866338e170d182…

MALICIOUS

PDF

54.3 KB Created: 2021-05-14 22:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2851c7b9062847b01cdf7405b77e7611 SHA-1: 2d6da0a16d5ea69bf9a013fcffdc2cb93fd657cf SHA-256: df866338e170d182b860f92d5f08c6f673d7eae63bbed7515ac2efa944950be9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to compromised WordPress sites, indicating a link farm designed to redirect users. Heuristics suggest it's a link farm on disposable hosting and potentially a phishing lure. ClamAV also detected it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7108

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1a76160d2---legezedemuf.pdf
    • https://www.deuba.info/wp-content/plugins/super-forms/uploads/php/files/1gfbs889iqhh1qi52l6ngc6pgg/57049676689.pdf
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/d81f1f370a65679c74c492faacf496ee/15222166927.pdf
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c5dfbc02a9---83480355689.pdf
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083ec42b1b57---jemenilodujukemeriru.pdf
    • http://eotp.info/sites/default/files/fck/file/vududodim.pdf
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ee24d8ae2b---37465061012.pdf
    • http://hurtmar.pl/Upload/file/52981578706.pdf
    • https://carea2plus.com/wp-content/plugins/super-forms/uploads/php/files/e1cd5e74b68bed4d7b47f4e054a35f31/84951138181.pdf
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086816f5f095---dagetojanubojawivuwebib.pdf
    • http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078fe0466231---retozowobumal.pdf
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/d10cb23fa33f219756143dcdc66fd5b8/57633114350.pdf
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6a535e9940044d41227851bd0c8c7230/rujimozepo.pdf
    • https://space1500.com/wp-content/plugins/super-forms/uploads/php/files/1f7c498d745f004fd004363d7aac21c8/muzenapozuro.pdf
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160987c8d3530e---beduwizoluvaguv.pdf
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/cud07vluejqr9g799lcjeu6jkr/91875636257.pdf
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160838790a44b6---45273210367.pdf
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/mh83cf3lasb46pluff2bksc1lo/30827708377.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=jquery+validation+prevent+form+submit

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