Malicious PDF — malware analysis report

Static analysis result for SHA-256 7949e3731ed1a1ce…

MALICIOUS

PDF

193.0 KB Created: 2021-06-07 03:47:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c401f5eb477b70984722f706f1958918 SHA-1: 20630cde55bc73ab915fe16e2966b7a7160a1fc6 SHA-256: 7949e3731ed1a1ce6d11675cf38f3137ebc3d1fbe880dec50089c4ac420b5377
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites, likely serving as a distribution point for further malicious content. The document body is heavily obfuscated and appears to contain metadata rather than user-facing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9706

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
  • 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 https://huntic.ru/uplcv?utm_term=periodo+de+incubacion+del+pajaro+cuclillo+y+ambiente
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607240e8d1918---lelixetutadunat.pdf
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/0aeff1df9163561b397851cef3adb04b/refusiwikiv.pdf
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/vge9mv47km52trb43vahh7hdb7/siwar.pdf
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/p5pd29k5jn0kairaik0hu6uqol/25831206613.pdf
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/5de2322aa79964ca7362928eb7871ed5/povuz.pdf
    • http://maychamsocda.vn/images/userfiles/file/turasevusagoximebe.pdf
    • http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/b8707490cd3d03905be5cb52df25acd4/65923427996.pdf
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/ae4jl69l6o8llv3ifeffkq82gk/6414261795.pdf
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/6868350b1bc5f7753b0d458e57e7db29/38868506747.pdf
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a14e7600fec---tuviditoletejunojuxezuw.pdf
    • http://studioagronomoserragiotto.eu/userfiles/files/wosetaxelimobetobag.pdf
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160787430ecd04---99850934531.pdf
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/48f26e3f42e1db6955b6374d0cb7bac9/jilujasawufubifapimut.pdf
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baaea30d68c---gonub.pdf
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ae126360f8d---22146091677.pdf
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16076206f8fb6a---84968613984.pdf

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