Malicious PDF — malware analysis report

Static analysis result for SHA-256 67d3feac95fa4135…

MALICIOUS

PDF

55.4 KB Created: 2021-09-04 17:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 14f1e273b6fc260df0c880fc1ef51f0b SHA-1: e78c1289f4ddc6e748144aa1995f2df0db7abdfc SHA-256: 67d3feac95fa41359e9c45c5b314c5c53805137207119f6a3af76780b7f693bd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, many hosted on compromised WordPress sites, suggesting a link farm or SEO poisoning tactic. The embedded URLs likely lead to malicious content or phishing pages, aiming to trick users into downloading further malware or divulging sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9258

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://laborke.ru/uplcv?utm_term=skeleton+crew+pdf+espa%C3%B1ol PDF link annotation
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160836e5b31719---46406692220.pdfIn PDF document text
    • https://autoteam.in/ckfinder/userfiles/files/14956577328.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985a689fbe1---82038764764.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/776ad1302dc6e6611633ead04f090e1b/wekunazisobitilusejuz.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16081972ebd207---54249337124.pdfIn PDF document text
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611148f45001b---42696717194.pdfIn PDF document text
    • https://miaousland.fr/ckfinder/userfiles/files/28100743608.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6b5e58343b---88403291449.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/74dec71975bdb9002f758bde5c0646d2/49521099780.pdfIn PDF document text
    • http://vietkinggroup.com/uploads/userfiles/file/66033345332.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/2c23e89c9d2adec300f36b0876aab373/kobonupexegika.pdfIn PDF document text
    • http://whkmradio.com/userfiles/file/11715487788.pdfIn PDF document text
    • http://pribatu.lamilagrosaimport.com/images/files/fanegeto.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/68e0e6ddf220ede71d2ca6744407fd21/misaxeki.pdfIn PDF document text
    • https://aymfly.com/aym_image/files/30041754017.pdfIn PDF document text
    • https://pasarantogel.com/contents//files/demegejukuwugubokir.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/5f096f16220709659e310abd81bc503f/87597984894.pdfIn PDF document text
    • https://ms01bet.net/contents//files/60648881268.pdfIn PDF document text
    • https://www.lloydsunder30s.com/ckfinder/userfiles/files/68145330497.pdfIn PDF document text
    • http://hurtowniagrafit.pl/userfiles/file/nebogawimuvodejexurekag.pdfIn PDF document text
    • https://abugfreemind.com/userfiles/file/lemomapegawi.pdfIn PDF document text

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