Malicious PDF — malware analysis report

Static analysis result for SHA-256 924f96f73bceea8a…

MALICIOUS

PDF

64.6 KB Created: 2021-01-26 00:54:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f85475c31ff155ad0967e527ecfa713a SHA-1: e42bd494b267821cb20b7ecbf384c124754c7535 SHA-256: 924f96f73bceea8a3734df7e025bac0927386f0cc261800153ec6ae1f1600307
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that likely serves as a lure for downloading further malicious content. The document body, though heavily obfuscated, suggests a pretext of providing a manual download, aligning with a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://traffset.ru/123?utm_term=lg+cell+phone+manual+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366304/normal_5ff661aabe8aa.pdfIn PDF document text
    • https://cdn.sqhk.co/javufikari/geTuJgh/53133575975.pdfIn PDF document text
    • http://hdvideo.design/43818223498ekeej.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385197/normal_5ff698a099823.pdfIn PDF document text
    • https://cdn.sqhk.co/mosugukasiba/3jKt8sW/neon_jumpsuits_with_sleeves.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402960/normal_5fe60b47bf342.pdfIn PDF document text
    • http://dle-tpl.site/25523789621baql3.pdfIn PDF document text
    • http://alkim.xyz/dream_league_kits_2020_manchester_uniteddtfsd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387931/normal_5ff6330649b2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454822/normal_5fec74f95d98a.pdfIn PDF document text
    • https://cdn.sqhk.co/tikikizeveni/fhfjdhg/pacman_3d_games_for_free.pdfIn PDF document text
    • http://siankaanmexico.com/screen_recorder_mac_free_download_full_version7ieyd.pdfIn PDF document text
    • http://1xbets-reg.site/invasion_modern_empire_hack._net8o6as.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC225 5244 bytes
SHA-256: 1e4a7173960cbf539d339831331114879e30b1574e78bafe990d96fb1fb2a386
font_01_sfnt_off0000d3ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3ED 9996 bytes
SHA-256: f19bfd115f885e46e16f1abf4e79f2985304df1d57e7c6b5dcbdeafdf68dd042