Malicious PDF — malware analysis report

Static analysis result for SHA-256 5949a1c43c4eb85d…

MALICIOUS

PDF

82.0 KB Created: 2021-02-23 11:10:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: bec05395d89408dc59361f56462b185b SHA-1: 77b31478fe466edabbdd68b43f92c668ac624b3a SHA-256: 5949a1c43c4eb85d4a30577eb56f97c58e7b9db4e9cda132e270eea95fdca2bb
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to reference 'Cyberpunk 2077 ps5 1.05', suggesting a lure related to the game.

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://leonvi.ru/strik?utm_term=cyberpunk+2077+ps5+1.05 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453560/normal_6026b4f79f1de.pdfIn PDF document text
    • https://cdn.sqhk.co/lilomovetum/2CdbDYy/pinout_for_crossover_cable_rj45.pdfIn PDF document text
    • https://cdn.sqhk.co/jidelugob/hauKhcQ/94829552959.pdfIn PDF document text
    • http://samozanyat.info/xunebevosunemekoderusiduxs3nbm.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/d0ighjj/6501379981.pdfIn PDF document text
    • http://detobusukited.iblogger.org/45987366308.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425727/normal_5fca669d3f014.pdfIn PDF document text
    • https://cdn.sqhk.co/duponetix/jJngdOy/meme_soundboard_apkpure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476285/normal_5ff47f3f4a137.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379379/normal_5fe3aaf958334.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/jh0cYjb/ninja_blender_ideas.pdfIn PDF document text
    • http://vebuwivatuma.iblogger.org/chhatrapati_shivaji_maharaj_information.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487626/normal_6020c614b9be7.pdfIn PDF document text
    • https://cdn.sqhk.co/punipopi/chvYjGn/jump_race_3d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lojizaruxaz.rf.gd/dulobonazumisad.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE710 6980 bytes
SHA-256: b83ea0544bdbd2bed670d535e9fa431ef02d73e1422df9d2dbd97ca87a642503
font_01_sfnt_off0000fede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDE 5344 bytes
SHA-256: 179f3278c523f5c749d64bdda2093e2133bde97d7daeeb5bb5e45abccbf1a477
font_02_sfnt_off0001113b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1113B 12892 bytes
SHA-256: fec872ead051a70cba3afe8489073b998461cad6aa0310482e4c08f4da765c5b

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