Malicious PDF — malware analysis report

Static analysis result for SHA-256 92e86b8847e7b82e…

MALICIOUS

PDF

66.7 KB Created: 2020-12-22 10:15:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e90f2c1da27a2ffc1ba9f5a52e32058f SHA-1: d78e7e30bbc3d45d6bfb1a0298dba1f14a435e2c SHA-256: 92e86b8847e7b82eac6e7816b36f74bb83949dadaedbd18425a7bdc911633e5b
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'traffset.ru', suggesting it is used as a lure to redirect users to external content. While no scripts were explicitly extracted, the PDF structure and embedded URI are consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffset.ru/123?utm_term=newnes+electrical+engineer%2527s+handbook+pdf
    • https://cdn-cms.f-static.net/uploads/4449012/normal_5fc0e8944d355.pdf
    • https://cdn-cms.f-static.net/uploads/4370740/normal_5f8ac43186fd9.pdf
    • https://cdn-cms.f-static.net/uploads/4444369/normal_5fd79efcdb477.pdf
    • https://cdn-cms.f-static.net/uploads/4380545/normal_5f8eaf34e6bc9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c4bdb67c-9cce-47ab-9b99-f2545ef363b5/terrarium_tv_premium_apk_latest.pdf
    • https://static1.squarespace.com/static/5fc596fed49dd12447542bd0/t/5fc91a98df8d9c718aa8ffe5/1607015068280/31071786819.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf69208845d09244fc11e/1606284955462/75271436633.pdf
    • https://static1.squarespace.com/static/5fc2f4615687f52b6b8e9594/t/5fc4be0e3485235c865bd8aa/1606729231651/kawaii_slime_company_review.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf07e1491241adc445f65/1606217855172/umich_physics_240_textbook.pdf
    • https://uploads.strikinglycdn.com/files/d4e13d4b-08ff-40e9-97c2-ea4eeabcdc5a/7487734353.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_off0000c721.bin
fb3a6f31871e5b777f94d952e73df4e74976bcc7e91855b176dc77361ae82819		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC721 5716 bytes
font_01_sfnt_off0000daa3.bin
c1b942f4652c33803a2948583ff4a6a6f45e87e296c1cd462c7af455575a50bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA3 10452 bytes

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