Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2763aa9ba2cec57…

MALICIOUS

PDF

47.6 KB Created: 2021-03-23 10:23:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6820d25d892407eb9074923bf01607a SHA-1: 6d25b0b4cd7e8cb26cff69ca2f70b99c7d732ba0 SHA-256: b2763aa9ba2cec5700c92a78728cb9a5a0813b53e437714080204eed5bb482f0
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its small size, image-heavy content, and embedded clickable link. The heuristic 'PDF_IMAGE_LURE' indicates a common tactic where a screenshot is used to hide an actionable element. The embedded URL points to a domain hosted on disposable infrastructure, further supporting the phishing assessment. ClamAV also detected this file as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7585

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 47 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://gimoguvi.ru/award?keyword=fusionner+document+pdf+gratuit
    • https://cdn.sqhk.co/sisuriwul/Cjd30Vc/lajagulemobezeza.pdf
    • http://tareworig.mywebcommunity.org/neonatal_s._t._a._b._l._e_program.pdf
    • http://sparzha.club/best_training_program_for_over_406w167.pdf
    • http://komarovskii.xyz/xogebuxuxavrd1r.pdf
    • https://cdn-cms.f-static.net/uploads/4419423/normal_5fd637df5c8b6.pdf
    • https://cdn-cms.f-static.net/uploads/4390995/normal_60171a48f13ae.pdf
    • https://cdn-cms.f-static.net/uploads/4467038/normal_60532c9a910e7.pdf
    • http://biolinkus.me/the_sandman_audible_release_datexeq5l.pdf
    • https://cdn.sqhk.co/wusirilunoko/wgivshe/factoring_practice_coloring_answers.pdf
    • https://cdn.sqhk.co/butaliwe/if8jeih/sky_sports_on_bt_platform.pdf
    • http://greyfruit.space/lugesupusinapudiramcv92h.pdf
    • https://cdn.sqhk.co/kavuzoda/hIPJjdv/67411392639.pdf
    • http://reweder.site/54452480402ydjrm.pdf
    • https://cdn.sqhk.co/pujazojiwixi/fEsKB6k/battle_angel_alita_last_order_characters.pdf
    • http://alphabitx.com/behavioral_therapy_for_adhd1mqnu.pdf
    • http://zesamoa.online/17833299349a8tfi.pdf
    • https://s3.amazonaws.com/pasawe/kugowukibadiwo.pdf
    • http://mixezized.myartsonline.com/4036929614.pdf
    • https://s3.amazonaws.com/paropabaru/79202638351.pdf
    • https://s3.amazonaws.com/bulikowexunepov/closers_soma_guide.pdf
    • https://s3.amazonaws.com/lolaritemukole/vexutokirasosinemesizabiz.pdf

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