Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ccb0aceabce769e…

MALICIOUS

PDF

37.4 KB Created: 2021-05-01 21:29:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c1444bd06446dda7ee421da857796c04 SHA-1: 2b1003945bcf1dcf892421646688153da52578d9 SHA-256: 5ccb0aceabce769e42edaaae4167deeeaa82c379d903c15239127b8d45bf62d3
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its small size and image-heavy content, typical of a screenshot designed to trick users into clicking an embedded link. Multiple URLs pointing to compromised WordPress sites were extracted, suggesting a distribution network for malicious content. ClamAV also flagged this as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4948

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 https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f38850fe1---33742394362.pdf In PDF document text
    • https://burmesecatclub.nz/wp-content/plugins/super-forms/uploads/php/files/264c7dc08b1b1d51f66c900e49bddaf1/68522910797.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/mobp2bthc7vhmoni1vhka2oit6/24985273629.pdfIn PDF document text
    • https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/25105df5a751c6265491af133ec2aff7/43285115395.pdfIn PDF document text
    • https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/7c2b4fe3bee2d3e7d48a92f90a23ddcb/detajora.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=capacity+planning+template+freePDF link annotation

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