Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc0148f2ba799785…

MALICIOUS

PDF

66.4 KB Created: 2021-01-14 09:45:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 4c59bc6ecd326528f49c97bf202e5962 SHA-1: 28839d7f70e60b95e727121952b3d9fc9c718e00 SHA-256: dc0148f2ba799785f4c758bc86afad530e9b57fb783f45365c0abad5533a6723
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafftec.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into visiting a malicious site, potentially for credential harvesting or further payload delivery.

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://trafftec.ru/123?utm_term=navy+federal+2020+pay+dates PDF link annotation
    • https://cdn.sqhk.co/vixuzemabad/jggeigh/fruit_dash_mod_apk_android_1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457881/normal_5fa4ab8363b45.pdfIn PDF document text
    • https://cdn.sqhk.co/waxipefimafa/1Odaiav/39107924658.pdfIn PDF document text
    • https://site-1178602.mozfiles.com/files/1178602/run_dino_game.pdfIn PDF document text
    • https://satizivuzaked.weebly.com/uploads/1/3/4/3/134383512/kekaxajufev.pdfIn PDF document text
    • https://cdn.sqhk.co/vexedobasof/hczagdm/public_health_and_nutrition_degree.pdfIn PDF document text
    • https://jaxipalat.weebly.com/uploads/1/3/4/7/134746428/5413799.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453108/normal_5fbefc2f945ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500201/normal_5fc22bfd9f8f2.pdfIn PDF document text
    • https://site-1221974.mozfiles.com/files/1221974/prehistoric_archaeology.pdfIn PDF document text
    • https://kexezesokofu.weebly.com/uploads/1/3/3/9/133986719/1246974.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_off0000c71f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC71F 5440 bytes
SHA-256: 12e42442bc270d16ba6da203727158a0d2791577121b7d7d5a5d846851dfb290
font_01_sfnt_off0000d9c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C3 10392 bytes
SHA-256: 8b335bc1e6e97c83cc0eb102857b8ef68dca7b9834a669c6e129409c17695dd0