Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe72ddab1b2c8eb8…

MALICIOUS

PDF

101.2 KB Created: 2021-09-07 14:56:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 95e14de50bcc5b2fec05a495ecc08ffd SHA-1: 6476203e10ca0ef3e93dd6aead476fa9d40e8533 SHA-256: fe72ddab1b2c8eb8807894d351f854c2ca3da323764e34766931edc436229136
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous suspicious URLs points to a watering hole or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8090

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 http://nhadep30giay.com/uploads/image/files/2393640231.pdf In PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/9028026672bf78888a94a99dbb638478/19706434667.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160885ebf929c0---jukilukuwopepodalubokab.pdfIn PDF document text
    • https://goodline.by/userfiles/file/watusodagifa.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/ccafe6cea35ba30f9b3969df5f070081/pudifogexelat.pdfIn PDF document text
    • http://hart-metale.pl/gimnazjum/userfiles/file/55970185708.pdfIn PDF document text
    • https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/994a89f0aecd4c194c55ab33b7ce34cc/28239331030.pdfIn PDF document text
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/bb2ad123f0d68c903632b64845ae8064/lubuwu.pdfIn PDF document text
    • http://aroma-es.site/yamituki-n/uploads/files/tevarun.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/b0a0e9f62b85a7b7461f5c4c67cacf36/5443423129.pdfIn PDF document text
    • https://powermailer.in/userfiles/file/9517954390.pdfIn PDF document text
    • http://grandfiltr.com/files/file/vokitaxewonuwe.pdfIn PDF document text
    • http://runbo.net/upfiles/files/16292074469984.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/jipujun.pdfIn PDF document text
    • http://doyen.cc/images/upload/File/melivakokubewux.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=pr%C3%A1ticas+de+gest%C3%A3o+de+recursos+humanos+pdfPDF link annotation