Malicious PDF — malware analysis report

Static analysis result for SHA-256 795fe85b4b8a1a61…

MALICIOUS

PDF

57.2 KB Created: 2021-06-06 01:56:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e07f20af2ce02b5ed80cba4389b842df SHA-1: 37daf9fff2d1ce92a5c979fc9c7221f129be374d SHA-256: 795fe85b4b8a1a6103f45d5868225b86cd0a3309bf28a74caa104a6450bce89d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to compromised WordPress upload directories, suggesting it is part of a link farm designed to distribute malicious content. The presence of 'utm_term=venus+factor+free+download' in one URL indicates a lure for users seeking free downloads. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

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=venus+factor+free+download PDF link annotation
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075be5d040bb---12853277409.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/11255cea7d3f63255c6ec3aa96e8b1d6/zejubipomuburidevevivedi.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/07ks7m4tom7mssvdd4upl9hmih/52161217568.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075a7a1a421c---24235936480.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083acbf4e1f9---vokokixuturugu.pdfIn PDF document text
    • https://africanresearchcenter.com/userfiles/file/zixazuluxaxe.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a69fef59685---lemirakesu.pdfIn PDF document text
    • https://terminal.hr/userfiles/file/17192386319.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160b61d901cb70---99889537288.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/cea1850f6848e5f87ef8941620fe9222/tobava.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a961d03d658---didibuxenudewejadikafew.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/jusigikefe.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/28b3fdc6b0bc15b382cf66fd19191cc8/94025250160.pdfIn PDF document text
    • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/cc400d5942e5cfe7efd711ff145b3ea2/56743258895.pdfIn PDF document text
    • http://cancercareresearch.com/userfiles/file/galiz.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/9604b261f8dfa64d58a38f9d4d53d072/50704894869.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/68f0c09850230b906f28a106435fb4e7/87061684382.pdfIn PDF document text

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