Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fad8136f4f872fb…

MALICIOUS

PDF

57.4 KB Created: 2021-05-09 23:02:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca831bcbae4716bd5157249c693ca8b0 SHA-1: 73a343983ac71da9eb6708e09e0e5e85ae99e500 SHA-256: 3fad8136f4f872fb2e707e1c16368dbd21ea5f6d9c793977471d6e28de997518
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to compromised WordPress sites, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier further indicate malicious intent. Although no scripts were extracted, the presence of embedded URLs and the nature of the heuristic firings strongly suggest this PDF is designed to lead the user to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7497

Heuristics 4

  • 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.
  • 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://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/d53aa9c9aca9b2ed295a6e88865b2b37/16163641795.pdf
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609313d45069e---walexulijovilula.pdf
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/db540577071e3247e991c908624a519f/dolexowanowawosu.pdf
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/dfj8mrejepuobekknb5njl15j1/95351471357.pdf
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608878f7337d1---duzobukasu.pdf
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/s1rpk7hrbkik68v385e57p1r9c/36402676877.pdf
    • https://whiteelephant.co.in/wp-content/plugins/super-forms/uploads/php/files/12ef7f9b1d7082692d95e316f19d8ac6/vovamixeb.pdf
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/b4ldvkh49jolltn6ftae1fss8n/bapavabozivesi.pdf
    • https://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/3jt0039upcdsm8tcpn0usp0qu9/47473582415.pdf
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087f9fc9c265---90909785828.pdf
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078a0392f75a---rogazav.pdf
    • http://fitnessklub-impuls.pl/uploads/assets/file/69192343762.pdf
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7c7d0c078---dejamodukolob.pdf
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/6cb5f6d48e834e5f1bec9e26fc8e436a/60600647454.pdf
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/2gbhan487ad39j8l65rbtlrqfj/15613848831.pdf
    • http://app8itebarandgrill.com/admin/images/file/34095976619.pdf
    • http://akinmedikal.com/uploads/file/54680156503.pdf
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/3e27d9b617eceb348d3ae50bc9ee4c68/mawugupipodesupajufesos.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=inequalities+worksheet+algebra+1