Malicious PDF — malware analysis report

Static analysis result for SHA-256 345336aa8ad0f0ad…

MALICIOUS

PDF

57.0 KB Created: 2021-05-22 01:56:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bf4d8857047073af0c7002b68b86644 SHA-1: cdd18c92bf3c79460605adcf9e7981d5c1fe3be7 SHA-256: 345336aa8ad0f0ad9e9f3af29c2c6bea77fd11088da9a4345aa3974bbb5db6ca
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised CMS upload storage and disposable hosting, indicative of a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the structure and URL patterns are consistent with malicious PDF lures.

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://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160925ae3224e1---50960013548.pdf
    • https://topinsolventa.ro/userfiles/file/foxolefosela.pdf
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072cdc89083f---zilevanevalekoripipadumu.pdf
    • http://www.greenbriarpropmgmt.com/wp-content/plugins/super-forms/uploads/php/files/c9dd4e3272fb5da4ad7bfefbede71771/situxozuletepedeb.pdf
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/536653e22ea386b55cba88b8efb109e6/49418314927.pdf
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/2469d5be3c3a062796670bba3b018eb4/lakuxafisugebu.pdf
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a8384c540f7---zelojojimalik.pdf
    • https://webupdate.ca/wp-content/plugins/super-forms/uploads/php/files/dvhi0kh3m3eqd1ioep9vtuvd93/50060615326.pdf
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/160988964cc908---43170046083.pdf
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609243fa2c966---fesek.pdf
    • http://argyler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607510a240a86---11576954658.pdf
    • http://bhk-aindling.com/userfiles/files/20712973716.pdf
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/6982c61a50d557fdc70d8a50ed3df39f/dekotuzikutef.pdf
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0aff82696---25896034164.pdf
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/6n2e28ucjp6pvl0sg7u48qtj20/49819014113.pdf
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ab1dc6451---daguvawusofewajoxateg.pdf
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a2a306322c5---besufomawodaxoxorujeruwo.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=maximum+ride+read+online+free

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