Malicious PDF — malware analysis report

Static analysis result for SHA-256 df66de09e6d7cacd…

MALICIOUS

PDF

62.0 KB Created: 2020-12-17 19:24:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cf5dbe91e66e5e018fcd51265c639c0 SHA-1: d0f396425b5bcee69beca8ae46f64f12774f32a6 SHA-256: df66de09e6d7cacdd7e52d53dcf75ca6f5f39cd40688559c6ea32aa4de57fd78
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier returned a high probability of maliciousness. It contains an embedded URL pointing to 'traffking.ru', which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to reference 'Waters of Babylon lyrics', suggesting a social engineering lure.

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://traffking.ru/strik?utm_term=waters+of+babylon+lyrics
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/suzujewa/apollo_tyres_annual_report_2017-_18.pdf
    • https://uploads.strikinglycdn.com/files/386278ff-6d8a-4b9e-8392-05be24d1e949/datanavusadixixiter.pdf
    • https://uploads.strikinglycdn.com/files/39ff8703-5b9f-4c02-9ce7-89cbf9b6e572/75420329857.pdf
    • https://uploads.strikinglycdn.com/files/49f7e1dc-8872-4ca0-9d29-0e6cd382984a/jokajutumixix.pdf
    • https://uploads.strikinglycdn.com/files/c11119d0-309a-4999-ad3d-c40de0dc9f05/chapter_12_geometry_answers.pdf
    • https://static1.squarespace.com/static/5fcdf2bfcd8500165ad3b5f1/t/5fd6869a5488895576b1344f/1607894682476/depenizemam.pdf
    • https://uploads.strikinglycdn.com/files/d8ba3e1e-551d-4b7a-a4d7-7b048378e5f9/11390719536.pdf
    • https://uploads.strikinglycdn.com/files/3cc57370-39a8-4f4d-8b7e-8b13900ca63b/64098530927.pdf
    • https://uploads.strikinglycdn.com/files/f73f8d91-aa9b-4c24-bafa-d538f5a2af85/57366558778.pdf
    • https://uploads.strikinglycdn.com/files/e08cdd4c-1004-4727-ba37-a3f106b45a00/13235358856.pdf
    • https://uploads.strikinglycdn.com/files/6ddf252c-14ab-4589-82c6-1ea4fab7cd0d/37440318460.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4b3c3f75b16643cb68e0/1606372157374/75979363479.pdf
    • https://static1.squarespace.com/static/5fc7b0c8c43b1711988c2de8/t/5fd16773ac13f65f66072e49/1607559027791/notokaxipeteboditogokegog.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_off0000b304.bin
d75291214062252ddf0ee97a0b0eb52a29dc6242aab9db20e5ed2fd9f090e0c8
pdf-font-stream PDF embedded font (sfnt) at offset 0xB304 5132 bytes
font_01_sfnt_off0000c49e.bin
71fb88193730640ab1fd741b69d2abce9c9c259d30f18589ecee147c05922e70
pdf-font-stream PDF embedded font (sfnt) at offset 0xC49E 10916 bytes