Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bb264ff1f7872c0…

MALICIOUS

PDF

172.2 KB Created: 2021-03-08 22:29:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 57b065a51574a4f71f5f797cf8766230 SHA-1: b2015e8b73cc509063fc932de04ef737cf844270 SHA-256: 4bb264ff1f7872c046190a16a01f9618e3b6f58db438b0d1253f3dac684eb544
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous external links, many pointing to disposable hosting, suggesting a link farm or phishing lure. The document body, though heavily corrupted, contains text related to renewable energy, likely a pretext to disguise malicious links such as 'https://nipisod.ru/award?keyword=les+diff%25C3%25A9rents+types+d+%25C3%25A9nergies+renouvelables+pdf'. No scripts were extracted, but the presence of multiple URLs and the heuristic firings indicate a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9881

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/award?keyword=les+diff%25C3%25A9rents+types+d+%25C3%25A9nergies+renouvelables+pdf PDF link annotation
    • https://tewedarutomos.weebly.com/uploads/1/3/2/3/132302993/7577670.pdfIn PDF document text
    • https://cdn.sqhk.co/sunomedude/jOgeQhi/purple_lightsaber_toy_amazon.pdfIn PDF document text
    • https://lasajiboz.weebly.com/uploads/1/3/1/3/131379041/temajo-tedutuxunox.pdfIn PDF document text
    • https://cdn.sqhk.co/towevefizub/BshbKhc/jaruzenuxemujibaxavijivu.pdfIn PDF document text
    • https://cdn.sqhk.co/novitovikor/dMjcjgg/idle_balls_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/cib2hjs/61236586972.pdfIn PDF document text
    • https://jexajopox.weebly.com/uploads/1/3/4/6/134656613/3797421.pdfIn PDF document text
    • https://cdn.sqhk.co/vovoritufi/eagdtjj/geometry_wars_pc_free.pdfIn PDF document text
    • https://cdn.sqhk.co/wanazofemuvu/jpvW2dZ/magic_carpet_tapestry.pdfIn PDF document text
    • https://cdn.sqhk.co/kizofapekeku/Xhalig4/jungle_monkey_2_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/78715974871.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4a0fedf-2fe8-48f2-bbd0-b410dabc0b4f/24718384049.pdfIn PDF document text
    • https://5e9c932d-19a8-4d5a-a970-d4bc0bcb832b.filesusr.com/ugd/bae0a0_512f6ee4c6c04d0287ee24b87ca2e9af.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fdde096-b233-453a-a35f-7717d5d92ef0/24281098503.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b72a3e43-4d05-4219-97b0-881244f480ab/homo_sacer_giorgio_agamben.pdfIn PDF document text
    • https://9a60fab3-6fb0-4be7-9305-b2e3cc44d963.filesusr.com/ugd/811c4f_709fc62db04a46d19f9dbc0aa38bd6d4.pdf?index=trueIn PDF document text
    • https://4d75d3c9-3a4d-4df6-84ab-e48b83d723e5.filesusr.com/ugd/cdb50c_0751f704d0af431ea1ea04f1a35083e9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5610fe86-69f9-4118-9257-6a4a979b856c/how_long_to_beat_super_metroid.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/does_wic_cover_formula_in_california.pdfIn PDF document text