Malicious PDF — malware analysis report

Static analysis result for SHA-256 13368a838c29ce92…

MALICIOUS

PDF

48.0 KB Created: 2021-01-12 15:43:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d32984c0953509dcbf0c66cf94294024 SHA-1: 23291549d2bd60aafbc481b32bb00c1131afd404 SHA-256: 13368a838c29ce926e80fc217c8ff114d4e43ae19e83cf13f96730b3c0d273f4
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 clickable link. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a campaign to distribute malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6641

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-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 48 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=the+guild+of+automotive+restorers+complaints
    • https://cdn.sqhk.co/puvubuzu/brjbicf/89674682242.pdf
    • https://cdn.sqhk.co/puburikob/gjmiajF/zokifo.pdf
    • https://cdn.sqhk.co/dorusafe/atnjhhg/78780889060.pdf
    • https://site-1172884.mozfiles.com/files/1172884/puzzle_bobble_mame_rom.pdf
    • https://site-1180277.mozfiles.com/files/1180277/ba_exam_date_sheet_2019_bzu.pdf
    • https://cdn.sqhk.co/zexoribuj/iihjhgv/allo_allo_season_1_episode_3.pdf
    • https://site-1173589.mozfiles.com/files/1173589/woodworkers_hardware_sauk_rapids_mn.pdf
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8c3f11ed.pdf
    • https://site-1168368.mozfiles.com/files/1168368/23022910764.pdf
    • https://s3.amazonaws.com/sevoga/fosulexukapoj.pdf
    • https://s3.amazonaws.com/bolovopizonuki/nirinivopawasokipir.pdf
    • https://s3.amazonaws.com/zurovajij/good_incremental_games_android.pdf

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