Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c03d4d5e6e7841…

MALICIOUS

PDF

71.9 KB Created: 2020-12-22 01:07:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1de963646312de6c3b4226fbe33871d4 SHA-1: b5a7f9fc187f2e2731a4bf659e0ad63515962947 SHA-256: 24c03d4d5e6e78410e80321f228ebe4c3d7f8626e29d117c894fb8bef1583dc5
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains an embedded URI pointing to 'trafffe.ru', which is likely a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit vulnerabilities or redirect users, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/123?utm_term=chemical+hygiene+plan+vs+hazard+communication
    • https://daluruxixofofi.weebly.com/uploads/1/3/1/3/131398394/rujopajuxekinurakana.pdf
    • https://cdn-cms.f-static.net/uploads/4379960/normal_5f8b3aea1ac36.pdf
    • https://cdn-cms.f-static.net/uploads/4408460/normal_5fbe891779cea.pdf
    • https://zonisobeb.weebly.com/uploads/1/3/4/3/134333784/zozexiwanemuga.pdf
    • https://cdn-cms.f-static.net/uploads/4425768/normal_5f9d173d9fbc0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/06f426e0-94af-4398-b090-3242cdb41bff/gelamevobu.pdf
    • https://uploads.strikinglycdn.com/files/17b6ee1e-7c94-45e0-be7a-0ea93b13289e/14499914916.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf277bc819f1cf49daf79/1606283896232/xojigadimuninatalonovif.pdf
    • https://static1.squarespace.com/static/5fc0c0f59955c744b53accb6/t/5fc154e9fa04221c71514e96/1606505706840/african_house_gecko_care_sheet.pdf
    • https://uploads.strikinglycdn.com/files/0cdf7366-5b27-44fe-ab94-0e143af66c56/rugonufanepidorokilelede.pdf
    • https://static1.squarespace.com/static/5fc7acbda4492a057e24fc6f/t/5fc956338cce120d14bbb6fe/1607030323977/nba_2k20_pc_hack_unlock_all.pdf
    • https://uploads.strikinglycdn.com/files/080f602b-80e8-4594-b0d7-42b45d106a29/siwejenutifukudopilarako.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d033.bin
36ab9175678f7b8acd9351d6cb99d2dfc795aa4c0f1ed9e412a2cdc3b0e6010c
pdf-font-stream PDF embedded font (sfnt) at offset 0xD033 5604 bytes
font_01_sfnt_off0000e324.bin
a0ed5c039fb4dcdf7ec35ff4ff3496d65be849d6dd5a5c1dc3735dcf3357d808
pdf-font-stream PDF embedded font (sfnt) at offset 0xE324 9780 bytes
font_02_sfnt_off0001049e.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x1049E 4324 bytes