Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ac85d9a0565a0c5…

MALICIOUS

PDF

51.7 KB Created: 2021-05-20 15:02:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ddf23f56f0ef393c92c307525a69ace SHA-1: c36bc34685ede3a43b0b18d1ad2b458cc59cb5ab SHA-256: 3ac85d9a0565a0c541693a73743350b4559cb0a3ad185dcd8d419fe817f972cd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to various websites, many of which are hosted on compromised CMS platforms, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the structure and URL patterns are consistent with phishing and malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7129

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://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/88c05be7b8df0ad60f09b6fc91ffb425/19365097477.pdf
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/tnhf78b84p7lpu8tt1dtt8fue3/11625589011.pdf
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5ffa83881---lokitewabewuv.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609190e3b6c7f---25262120491.pdf
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607adb2b97063---65043720213.pdf
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/bbb6d9bccf3dd24eb5433697cb533110/33638613934.pdf
    • https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/3c1f18c8bf031ef9b76e9b387a1747d9/gopajomug.pdf
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078f70edd621---vepenupesipeloxenut.pdf
    • http://aire-limpio.com/img/editor/file/68629407199.pdf
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/9c856fec841e79b03e43d86b0b226dbd/lesodizo.pdf
    • http://adance0112.com/upfile/editor/file/nanigugazojetorip.pdf
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f69ed9f595---20562067925.pdf
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16077f9f6c81d6---towefoxufuzaj.pdf
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a5d1037c05---52766338647.pdf
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/16096cb044ba73---4614566428.pdf
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160795e617b621---97374608826.pdf
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/4b6114f60bc3f5bd8c4057acb7cf1aea/70060809309.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=how+to+charge+a+duralast+900+amp+jump+starter

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