Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6b7851f88b93ea4…

MALICIOUS

PDF

53.1 KB Created: 2021-04-30 02:02:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d83b55e2c364d1be42fd049ac4e148a9 SHA-1: 97fb22ec7579bb83a84399668ffba68699f35792 SHA-256: c6b7851f88b93ea4400d9d0348a33d0d8fef56cbf91646efbb292bc89a867fcb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to compromised websites, specifically leveraging WordPress 'super-forms' plugin uploads. The document body, though heavily obfuscated, contains references to 'Anjali movie song masstamilan' and 'wkhtmltopdf', suggesting a lure for users seeking media content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6648

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://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/l0mk8q44inlhg77qr0qu746mnp/64312236089.pdf
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/160848a378d8d2---25044070506.pdf
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/d8bfa0ae8d5f849bf6626ebc392de5ad/76066383497.pdf
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/63538f0688f3d5458ce48edc84a21286/75612385666.pdf
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/5iisc5g5hl63jsd2db83bp2o94/88176003951.pdf
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/49cb0631b58d44ad104cd8d5bca91d13/govakufizatemekubekikini.pdf
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/b88357c1f0a7eafd277f0b9748108093/96486562672.pdf
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/5b1468de25b64b9e9e4b6f32418625a3/bagazu.pdf
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/dc52d69a66b45f229a9b3c9266d96f5d/rufoke.pdf
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078ac14a743c---54495749414.pdf
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/be6108394eedb0294636f9af109a1b34/22061430267.pdf
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/16085f453bdf6a---rakuzaxaravudeda.pdf
    • https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dc7306f630---56742201088.pdf
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef3a592742---paduzotanawore.pdf
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/93b798561c8b0f173279266f6f422b77/wowafabitigof.pdf
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083801e79498---jurilapamovi.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/432c337185457365e7816bd7aec6fa67/loferuvikajadevutazej.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=anjali+movie+song++masstamilan

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