Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e4b160e64c80be6…

MALICIOUS

PDF

75.4 KB Created: 2020-12-25 12:28:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 966ff8804c32f44282c8adb461342aba SHA-1: 13ed1a8d21db4b6fed69591ef366b4a1939d0b9c SHA-256: 2e4b160e64c80be658bc59a330b4c5fbc6161820e7c27fa7c8a3fa6fa26202f2
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lead users to download potentially harmful files. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is likely part of a phishing or malware distribution scheme, masquerading as a game download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gettraff.ru/strik?utm_term=beyblade+burst+rivals+game+download+for+android
    • https://cdn-cms.f-static.net/uploads/4446762/normal_5fab91be29912.pdf
    • https://cdn.sqhk.co/vutexexukus/d7mQchd/77149029626.pdf
    • https://cdn.sqhk.co/bitubebo/gcVe1hb/26133892887.pdf
    • https://cdn.sqhk.co/poxufape/hjhhijl/lezuxemak.pdf
    • https://topizamo.weebly.com/uploads/1/3/4/4/134435864/kivemaroga_zewitagu_wiguromunisawa_nowinov.pdf
    • https://cdn-cms.f-static.net/uploads/4372382/normal_5fbd1fe8eb1db.pdf
    • https://cdn.sqhk.co/dutebevon/aif7ghc/4224563599.pdf
    • https://jazetixi.weebly.com/uploads/1/3/4/4/134494542/b8b0bb2a.pdf
    • https://bivixogerixud.weebly.com/uploads/1/3/4/4/134469213/2544979.pdf
    • https://jopomewimedadi.weebly.com/uploads/1/3/4/4/134465277/bapikugo.pdf
    • https://cdn-cms.f-static.net/uploads/4402711/normal_5f9a5f3692a1c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lerezazo/85155388437.pdf
    • https://s3.amazonaws.com/fosagobomap/crossword_puzzle_template_ppt.pdf
    • https://s3.amazonaws.com/dewazewokib/buzekatejimomumuj.pdf
    • https://s3.amazonaws.com/nerugiraxura/voltage_current_transformer_definition.pdf
    • https://s3.amazonaws.com/radubozufiwo/puzetoliresus.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e699.bin
95283e2d80a0ea9556bb1cd151c458ff779d959f5033a4d0e8f99a1af6fe862b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE699 5672 bytes
font_01_sfnt_off0000f9f1.bin
e13f21f5e77307f3ad4bfae007cbaf063954281855fac03a2291e4d3d3f40b26
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F1 11380 bytes