Malicious PDF — malware analysis report

Static analysis result for SHA-256 9211d0942c8dc315…

MALICIOUS

PDF

75.6 KB Created: 2021-02-20 00:40:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05f851cf4f2bbd74e928c77eba353c0d SHA-1: 7906905de577a96422b83fa6b6af610296d540f3 SHA-256: 9211d0942c8dc3150686844c89aec663466f4826652eefa7af1b50f11d0ad790
116 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The 'SE_CALLBACK_LURE' heuristic suggests the document is designed to trick users into calling a phone number, a common tactic in callback phishing and tech-support scams. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics strongly suggest the document is part of a phishing campaign, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://druttle.ru/wix?keyword=barrow+county+courthouse+winder+georgia
    • https://tololomajaju.weebly.com/uploads/1/3/4/4/134472688/e4dd4b689a6.pdf
    • https://cdn-cms.f-static.net/uploads/4388271/normal_601b244b9a332.pdf
    • https://static.s123-cdn-static.com/uploads/4465147/normal_5fe1cff8ae55d.pdf
    • https://wururozudarorar.weebly.com/uploads/1/3/1/3/131380521/1774357.pdf
    • http://frukt.space/detedalag9ir0u.pdf
    • https://julasunanuk.weebly.com/uploads/1/3/4/3/134308365/zonoj-disis.pdf
    • https://tokemenar.weebly.com/uploads/1/3/4/3/134337898/xilabowo-mutiwaxi-xikakog.pdf
    • https://vazexisosumufil.weebly.com/uploads/1/3/4/4/134465451/6311786.pdf
    • https://dikasawo.weebly.com/uploads/1/3/5/3/135349802/804de9eca5a51d.pdf
    • https://cdn.sqhk.co/zexupibo/hjehkIE/catch_ultra_beasts_sword.pdf
    • https://cdn.sqhk.co/teforoke/hbibbG3/world_war_iii_gameplay.pdf
    • https://cdn-cms.f-static.net/uploads/4420018/normal_5fd9e28f09830.pdf
    • https://nitaluba.weebly.com/uploads/1/3/4/3/134348735/4695178.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jarirotexab/15936766680.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_off0000ea07.bin
822432579e5531f818cef6f8d59cee80d30cd80f7b91bb63372dc1bfc18595a7
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA07 5412 bytes
font_01_sfnt_off0000fc85.bin
83ba6c0f8bf26d016b13135950a6964decd592e129daf00b2db44dda22ffc388
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC85 10784 bytes