Malicious PDF — malware analysis report

Static analysis result for SHA-256 a26248a17c8bfb6a…

MALICIOUS

PDF

75.0 KB Created: 2021-03-29 14:50:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 853ffee8ce260fe0c7ade841dfe47933 SHA-1: 54b7ee9d46b921f2836c0de42ad8bc7eeb280d64 SHA-256: a26248a17c8bfb6a87429c04932e52e6e2df1757f6e75a2f40805cfef29306f4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are disguised as legitimate documents, indicating a link farm or SEO spamming tactic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution through these links. No scripts were extracted, but the PDF structure itself is indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9597

Heuristics 4

  • 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
  • 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://dugedepap.ru/award?keyword=developing+assertive+communication+skills+pdf
    • http://tevopose.66ghz.com/57583893622.pdf
    • https://cdn-cms.f-static.net/uploads/4488572/normal_5fd2dded3cf66.pdf
    • https://bopilopuneliniw.weebly.com/uploads/1/3/5/3/135304065/891779.pdf
    • http://minosiw.22web.org/wowoluvojuvuli.pdf
    • http://jedugefipevama.iblogger.org/starcraft_brood_war_battlenet.pdf
    • https://popokafiri.weebly.com/uploads/1/3/1/4/131437291/3455340.pdf
    • https://jilukixewe.weebly.com/uploads/1/3/4/0/134042659/fezebe.pdf
    • https://fatononatigomun.weebly.com/uploads/1/3/4/8/134846471/8826685.pdf
    • https://cdn-cms.f-static.net/uploads/4470040/normal_5fd3bd05b471c.pdf
    • https://wamurereleveti.weebly.com/uploads/1/3/5/3/135392703/rupuvesawa.pdf
    • https://cdn-cms.f-static.net/uploads/4384150/normal_5fd192d5d3b0d.pdf
    • https://s3.amazonaws.com/resixexi/jofisogob.pdf
    • https://s3.amazonaws.com/pusori/asphyxia_piano_sheet.pdf
    • https://s3.amazonaws.com/dowavelaxam/77639451478.pdf
    • https://s3.amazonaws.com/vukujidor/cemu_breath_of_the_wild_install_guide.pdf
    • https://s3.amazonaws.com/sesafefanulokam/rational_function_transformation_equation.pdf
    • http://folixuk.rf.gd/dajewirimapume.pdf
    • https://s3.amazonaws.com/xoxaneral/big_chungus_song.pdf
    • https://s3.amazonaws.com/pirosisob/72237303079.pdf
    • https://s3.amazonaws.com/jefazaxal/40066074715.pdf
    • https://s3.amazonaws.com/sugowubuf/xemofibuzaluvaz.pdf
    • https://s3.amazonaws.com/fakuguvil/ye_bhagwa_rang_dj_king.pdf

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