Malicious PDF — malware analysis report

Static analysis result for SHA-256 7210841e6d44506f…

MALICIOUS

PDF

67.0 KB Created: 2021-01-01 16:42:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98acb636fb4801dd54e8bcdfba3fa50e SHA-1: a151500cadf5e140d7858a583978b26c2ae84a1b SHA-256: 7210841e6d44506f018cf2755c3d785a26ae4bd554f93bff1cc68b0ba88b34ec
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to other PDFs, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9514

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/strik?utm_term=eso+necromancer+skills+guide
    • https://xopilujipuwoka.weebly.com/uploads/1/3/4/8/134886601/afbedb302bd4e.pdf
    • https://cdn.sqhk.co/peluxisomex/agjMQVT/nolumenuxuwuzoxiwi.pdf
    • https://wuduzavuvavazi.weebly.com/uploads/1/3/4/6/134618101/tasudegoladufe.pdf
    • https://cdn.sqhk.co/pawosuku/0ujiIif/honkai_impact_stickers_whatsapp.pdf
    • https://cdn.sqhk.co/sezelijimofi/YOKgjge/rotewepuxadepopub.pdf
    • https://subijiderekura.weebly.com/uploads/1/3/4/6/134616270/duwogarafetefa_nofobanitum_jewebemuwipofi_nutemajem.pdf
    • https://goxuxogegeta.weebly.com/uploads/1/3/4/6/134688707/suriluvi.pdf
    • https://lavigumujow.weebly.com/uploads/1/3/4/4/134438710/8719500.pdf
    • https://cdn-cms.f-static.net/uploads/4501201/normal_5fd6cf50d7ae0.pdf
    • https://uploads.strikinglycdn.com/files/9a8181d3-2f03-4ae3-bffd-20c113713cff/54624122226.pdf
    • https://uploads.strikinglycdn.com/files/33b8fbd4-7ba4-47f3-85a4-9c1a9c358c8c/43339926742.pdf
    • https://uploads.strikinglycdn.com/files/afa7e306-4745-4306-ac8c-f4bbfb0eb51a/8395277413.pdf
    • https://s3.amazonaws.com/duzexefemosaxe/213317005.pdf
    • https://s3.amazonaws.com/felasorarabipis/comment_assembler_2_en_1_mac.pdf
    • https://uploads.strikinglycdn.com/files/46aad56a-e297-4a32-b1e6-48a033db0a18/fruit_ninja_blender.pdf

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