Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac4357c01c7f0b3…

MALICIOUS

PDF

64.0 KB Created: 2021-02-14 13:46:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81ea02802f732c91325637570ae59444 SHA-1: 713aeff6c1e4f15a5e7f7f37987abc0bf890bdc1 SHA-256: 2ac4357c01c7f0b31af50914d027595eeeff70331c6a79c4c597063bc33abc7f
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-heavy nature and embedded clickable links, typical of social engineering tactics. The presence of multiple disposable domains and Weebly subdomains hosting PDF files suggests an attempt to distribute malicious content or redirect users to phishing sites. The ClamAV detection and ML classifier further support its malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7721

Heuristics 5

  • 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 64 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://seumenha.ru/123?utm_term=monster+hunter+trainer+online
    • https://miwozomeme.weebly.com/uploads/1/3/0/7/130775979/wiribado-weruzasux-lazolilemaw-jopiruwo.pdf
    • http://storeeuro.info/greatest_showman_rewrite_the_stars_sheet_musicm3gg4.pdf
    • http://baykamif.space/95591891995309cm.pdf
    • http://freds.space/uidai_aadhar_open_passwordzfco4.pdf
    • http://50offit.pro/financial_report_orangemc4kp.pdf
    • http://karnaval.host/brighton_rock_graham_greenedne9d.pdf
    • http://tomogorman.com/94255237849dy1k8.pdf
    • https://vimixake.weebly.com/uploads/1/3/1/1/131164471/3faa0a.pdf
    • https://bidijewufamidu.weebly.com/uploads/1/3/5/3/135325384/tulonazosavi_supigese.pdf
    • http://gonumarimemax.epizy.com/meterpreter_shell_cheat_sheet.pdf

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