Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb2d125dee6ae5c4…

MALICIOUS

PDF

37.3 KB Created: 2021-07-14 08:24:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: f2f50956727ef61d426668d3d2536ba9 SHA-1: 974f25cd4115fd26ba910c8bbfc4ceab61449a79 SHA-256: cb2d125dee6ae5c4d62e4914c23dc0831505bf64c1796bd1be4d88c41739019a
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure with an image-based design and a click-outward action. It contains multiple links pointing to compromised WordPress upload directories, suggesting an attempt to host malicious content or redirect users to phishing sites. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6864

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 37 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • 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://coiffurenais.com/userfiles/file/durapekorugibof.pdf In PDF document text
    • http://xycrusher.com/d/files/pigir.pdfIn PDF document text
    • http://ssujaxchapter.com/clients/83257/File/xoderuxu.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607567cf27b01---fegesajuzodiwegifi.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/d36be3760b613e6a91e90c99d51784d9/gogixijikivumerukanesiz.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/ximuxejuwawogow.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bdcf3471acd---buwuboxedovowakedonif.pdfIn PDF document text
    • https://cbolean.com/wp-contIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=echo+in+medical+termsPDF link annotation

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