Malicious PDF — malware analysis report

Static analysis result for SHA-256 508d8181038aef53…

MALICIOUS

PDF

37.9 KB Created: 2021-07-20 21:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5fa00708c079472be553691f116b4e2e SHA-1: 6cb2ee040156508904a2b22de43090ab2a2cb30b SHA-256: 508d8181038aef531194567b4b3685b63f0b4792097abdeaeed12bd5c328bf9d
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded links, a common tactic to redirect users to malicious sites. The ClamAV detection and ML classifier further support its malicious classification. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit user interaction, likely leading to a second-stage download or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7773

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://mamo-tato.ro/userfiles/file/20732797376.pdf
    • https://loyallcanada.ca/editor_files/file/gidajebozugup.pdf
    • http://akinmedical.com/uploads/file/ganemimugujo.pdf
    • http://ewhamd.net/upFiles/ckeditor/files/kulajaruvan.pdf
    • http://stromzeleny.cz/file/zisubepizutasomos.pdf
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/64554064160fefd6eac0d06ec9f6ba70/99541561423.pdf
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606efda0d152f---80684332769.pdf
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/c31b44b42f0315a4090f3f073665c4ee/20665447041.pdf
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/fjnvs97lp0mtr26b6qr2nbtct9/saxidu.pdf
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bb892410352---wanizipebegeva.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=cost+of+adding+a+front+porch

Open this report in the interactive analyzer, or submit your own file for analysis.