Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf5ae0343e11b6e…

MALICIOUS

PDF

46.9 KB Created: 2021-01-26 14:25:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7798ae87244875d5e77f9e84dcb8eb9b SHA-1: fe3d86dbeb784b87adaa2d30c37539929e0a1487 SHA-256: ccf5ae0343e11b6ee06b6b2389cbaa6cc9160fc992a6164d083d9238c6702cf9
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by multiple heuristics, including ClamAV and an ML classifier, and exhibits characteristics of a phishing lure. It contains an embedded URL that leads to 'trafffi.ru', suggesting a redirection to a malicious site. The PDF structure, being image-heavy with a click-outward action, further supports its use as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9368

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 46 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://trafffi.ru/123?utm_term=bmw+garage+door+reset
    • https://static.s123-cdn-static.com/uploads/4365657/normal_5ff1ed0183011.pdf
    • https://posuzelivoj.weebly.com/uploads/1/3/4/8/134869480/wunekelodulu.pdf
    • http://tvoeobrazovanie.fun/best_star_map_for_ipad_free2pi52.pdf
    • https://jasefukop.weebly.com/uploads/1/3/0/7/130776564/4162604.pdf
    • https://cdn-cms.f-static.net/uploads/4416506/normal_600beec252303.pdf
    • https://cdn-cms.f-static.net/uploads/4382948/normal_600b67487fa2f.pdf
    • https://cdn-cms.f-static.net/uploads/4529697/normal_5fe8c1acbe637.pdf
    • http://ulekschool.online/birds_of_prey_harley_quinn_outfitvkhyg.pdf
    • http://ubsvp.com/rijiscxk05.pdf
    • https://pagopejej.weebly.com/uploads/1/3/5/3/135315805/taxofamoselegusazo.pdf
    • http://erogan24.website/82659837814awqz6.pdf
    • https://s3.amazonaws.com/jeromopelurab/55223811949.pdf
    • https://s3.amazonaws.com/falevi/buddhist_civilization_2019_answers.pdf
    • https://s3.amazonaws.com/napoledunadigo/tamil_hd_1080p_movies_free_online.pdf
    • https://s3.amazonaws.com/kukupunopedon/best_training_coordinator_interview_questions_and_answers.pdf
    • https://s3.amazonaws.com/lokijuronig/53836761459.pdf
    • https://s3.amazonaws.com/wulotugadag/animated_powerpoint_presentation_templates.pdf

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