Malicious PDF — malware analysis report

Static analysis result for SHA-256 385b2d3a530600f6…

MALICIOUS

PDF

54.4 KB Created: 2021-05-02 09:11:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fadc44e22fea5257daabde0f098962d SHA-1: 35d555cffc4f8e0358d8158887d0f8c035cb0316 SHA-256: 385b2d3a530600f6d3c6b6885c5dbaaa6998594c7f772fab22203e24473e6f09
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress upload directories, suggesting a link farm designed to distribute malicious files. The ClamAV detection as 'Pdf.Phishing.Trojan' and the ML classifier's high confidence score further support a malicious intent. Although no scripts were explicitly extracted, the PDF structure and link farm indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7284

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0e2f24f0e---topokenujunetudibib.pdf
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e08bec99f3---ponotigarajopapisal.pdf
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa826a56a7---jaribobovutowexojibewen.pdf
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16081ce44001c4---96661536986.pdf
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/r0a5iq5ei3kmoi9u27uj8bfbj1/tulun.pdf
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608937a1a7b72---62907371205.pdf
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160892873ba1da---46210024494.pdf
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e5a33d6653---gebifomol.pdf
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074d52eb1e13---89430243951.pdf
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/abdbbed6dma3jd7oj6t21iktkv/71897736197.pdf
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/d4830da0262a2ae53a0c5fd1f5a2cd02/pobemewivixudu.pdf
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/88248fcb7ec8431e1acd674d541f1a01/zutilurog.pdf
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/mtvqq8rpbsnjmiisecvgukc3d6/dipetom.pdf
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160843e8ea5584---laletenetonuxowikupiwugub.pdf
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/a06d1461adc38963896b8b6f5c4d063d/50148051350.pdf
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/3b4870aa203c4d083c614dde698daa61/27000741412.pdf
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160796f7338d7c---zenomajizipizelovejuj.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=ib+language+ab+initio+guide+2020

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