Malicious PDF — malware analysis report

Static analysis result for SHA-256 84756af0000da90d…

MALICIOUS

PDF

76.0 KB Created: 2020-12-29 14:44:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 650561de240c5b50d43beadd4a687a44 SHA-1: 18b950abd346c12bb6170a92bcddf2258f7c1984 SHA-256: 84756af0000da90d28055db602343be75795cdbc489f71b3d02bee84aed593be
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, traffmen.ru, which is disguised as a download for a game mod. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is likely used to deliver a second-stage payload or phish for credentials.

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
  • 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.
  • 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://traffmen.ru/strik?utm_term=drunken+wrestlers+2+mod+apk In PDF document text
    • https://cdn.sqhk.co/vosiwuli/hfheVC3/switzerland_flag_image.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375503/normal_5fc3d375e4090.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453540/normal_5fc8a5673b4ac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393632/normal_5feafc4638630.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447487/normal_5fbc6d1b347f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489716/normal_5fde111199878.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476580/normal_5fe816579a15f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413120/normal_5f9c6cf831e16.pdfIn PDF document text
    • https://cdn.sqhk.co/madeparev/dHii5gi/flame_hero_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450042/normal_5fc9e6a13a6d8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fedure/ant._com_video_er.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/charles_proxy_certificate_for_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/rironuxajipomowo.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_off0000dae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE8 5228 bytes
SHA-256: 5c92bcbc034b18517da5c19d9563e4b7babc36ee864b0211539e45eecdf132e7
font_01_sfnt_off0000ecac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAC 11400 bytes
SHA-256: d4a3061efd0c69abc2e1843fb84a45c1b8e08d0c6c0563e4040ccedf4aef1475
font_02_sfnt_off00011384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11384 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.