Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b16864505c8252c…

MALICIOUS

PDF

55.8 KB Created: 2021-05-17 09:11:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a572c0b7c1620f018495fee9040dfe0 SHA-1: 89c8a9ef0a776255becc8a102b0809e4e1879c4c SHA-256: 8b16864505c8252c48158806804725883ea52e1cb4c991f8e916cfe506d00af2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links, many of which point to compromised WordPress upload directories or disposable hosting. The document body, though heavily obfuscated, suggests a lure related to 'training cost benefit analysis template excel'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6956

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://pixomot.ru/uplcv?utm_term=training+cost+benefit+analysis+template+excel
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609fec2d3ef9e---pifuwenawas.pdf
    • https://sharadsangam.org/UserFilesTwo/file/51520277276.pdf
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/c823e6cee93ef6496af2cc5a57696c2b/nazosatufefisazatin.pdf
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160768d5a08b7a---mewuvelibajidowumibugefi.pdf
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098bd37523a9---44356092194.pdf
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/kupijido.pdf
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/6112e5f4bb3030903e8146eca1cb4d0b/nalawekorawatepexoninir.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095d150c7372---19808781153.pdf
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608494289e0c1---volajaru.pdf
    • http://goldnumber.info/userfiles/file/lawebo.pdf
    • http://anhbanglaw.com/userfiles/file/11185321891.pdf
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/16095a731edfe0---16593872826.pdf
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609db39f6265c---37824630756.pdf
    • https://betenrealestate.com/sites/default/files/file/68159315025.pdf
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/36128c2995747a7851ab400aa93b801b/gogefipopinuxijodej.pdf

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