Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fcdeabf4f3602f1…

MALICIOUS

PDF

75.5 KB Created: 2020-12-02 02:52:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 6fda63b769610987a762245a15aeefa8 SHA-1: 5d285d55c6dc460e37ef341d858ffaededac3202 SHA-256: 2fcdeabf4f3602f16145d2f8450bb33ab688c9f7abe3093387be4a84864a5908
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to 'trafffe.ru', which is flagged as suspicious. ClamAV detection and ML classification strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/wb?keyword=tulja%20bhavani%20mata%20photo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453334/normal_5fbefb4150bff.pdfIn PDF document text
    • https://zuxobopabure.weebly.com/uploads/1/3/4/3/134344154/womuwopi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457838/normal_5fb2f259cabff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/zonivezada/digestive_system_labeling_quiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/719c0f23-f53d-4b6e-bbad-635a0cfaa1c4/delizirinufemowazefekadar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00c9acda-488d-429f-97e6-8ec2eaa1f291/strip_mall_design.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5028d8f3-f591-4b7c-8c0b-7c40eaceb1d9/wotlk_rogue_pvp_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31ed949e-7fa0-42e7-a1eb-2740a778ac11/tedegejixilinaniwonu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04cf602a-d841-46a5-8f18-6a88ea1dd8ac/manuf.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/cual_es_la_capital_de_francia.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3DE 5012 bytes
SHA-256: a11ce0078ad7abd7c90d1902309a82cd7f96e2fa88df7a34ab20afd0296fa136
font_01_sfnt_off0000d4cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CB 10784 bytes
SHA-256: 1912a05156a02a5bf8ce3612d2be26041ea040f1a602ebcd4c6f520221afa415
font_02_sfnt_off0000f814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF814 12568 bytes
SHA-256: 0a303466545e7eebe3669c68997c38e2c00481693b60ac6e76024a34d6516b06