Malicious PDF — malware analysis report

Static analysis result for SHA-256 65d19a4e11c4724b…

MALICIOUS

PDF

163.3 KB Created: 2021-03-03 17:55:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 302903d389f497f134c5952c16ce9b11 SHA-1: 28feafa354ae51c689e6a9c6de6c556f39893457 SHA-256: 65d19a4e11c4724b2d3c75698b15616b3008f7f0023295ed262a9e56adc17fc5
96 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, one of which is directly referenced in the document's metadata and appears to be a lure for 'Cyberpunk 2020 homebrew classes'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://zajinet.ru/strik?utm_term=cyberpunk+2020+homebrew+classes PDF link annotation
    • https://cdn.sqhk.co/xadeviro/hh3PY5s/sound_effects_library_download_free.pdfIn PDF document text
    • https://cdn.sqhk.co/rekubapapup/hegdYS4/boserunenorasuvogiwi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424646/normal_6026ca4c288d1.pdfIn PDF document text
    • http://zakewabo.scienceontheweb.net/lojefotolofo.pdfIn PDF document text
    • https://cdn.sqhk.co/jemajujo/eSjdLgh/galaxy_warrior_alien_attack_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/mivuxakadu/hhicijr/rpg_ninja_warrior_quest_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388612/normal_5fc8b5703b0ed.pdfIn PDF document text
    • https://cdn.sqhk.co/genizataxom/heribMc/practice_makes_it_perfect_quotes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379610/normal_6004d98b14839.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/akjjhdW/wsdot_traffic_alerts_i-_90.pdfIn PDF document text
    • https://cdn.sqhk.co/kizofapekeku/VsNr6yI/jump_adventure_newport_reviews.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416810/normal_5fe76a1d65dc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384459/normal_6027b8f521d0d.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/bgjii7T/minilovaja.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_off000244a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x244A9 5748 bytes
SHA-256: 5f86aa8247c69b56a7a9ced619e61419b6d6a9b8278a42eeee71752d63df8ce3
font_01_sfnt_off00025826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25826 11604 bytes
SHA-256: 2e7fb2941e1088c4bd8946592376904839f728b75c14574ac2b5f2290608c10e