Malicious PDF — malware analysis report

Static analysis result for SHA-256 a34ab090c0bc5841…

MALICIOUS

PDF

57.2 KB Created: 2021-05-06 23:57:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23475851cdb5b84dd97f7683d249f3c4 SHA-1: 8727ab055ec189877f483d1a12541f7809af0414 SHA-256: a34ab090c0bc584109faaa8307b7b0437762e4390edd0cfa1885a238deee1547
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains metadata related to 'usa fishing delta report' and the authoring application, which likely serves as a lure.

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://oniceh.ru/uplcv?utm_term=usa+fishing+delta+report
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/d6ef9958d91e60c22cf4de3ffb21b07b/77707951056.pdf
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/8004acbc4ab6d2d9cb1c5c6dc32bf16c/93260247155.pdf
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/mfg06shclc16a6eji3c0rq5sdo/mutowewimaniridi.pdf
    • https://amenajarisiconstructii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16088560570e13---faxakomiguvutapik.pdf
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccc4ae3885---fetazixa.pdf
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4c1b15142---vijowitijotimelufetosi.pdf
    • https://www.sehersirin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc7ab8150a---piwekuvosuwawakujarak.pdf
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608224b67bd1f---xamasufalevum.pdf
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/ca1bcbd44995f7c534609baa2e70a963/9934808692.pdf
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/923fba9dde310fd2f991411e6fffbd6e/besuvaxurakoravepekaf.pdf
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071e5d76c0f0---nepivin.pdf
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608f4f41a810f---46562004368.pdf
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081d83fd4899---90444505292.pdf
    • https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/7f09518dbee04ffc197702871e8e23ae/65859785109.pdf
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160934204be07f---76590952112.pdf

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