Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c2d93daf902b85…

MALICIOUS

PDF

76.0 KB Created: 2021-03-19 10:41:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b546e0fb87673154190002484e16ef91 SHA-1: 2b8c51bb90b159924d1961c7e34d3304618c23e7 SHA-256: 00c2d93daf902b85908795c10c1a16fb5fc1b6c8a7d28d32e6d6984d0946c8cc
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains an embedded URI pointing to 'golowaki.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, potentially as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/wix?keyword=discord+syntax+highlighting+mobile
    • https://cdn-cms.f-static.net/uploads/4494139/normal_602c6f9311c27.pdf
    • http://damvglaz2.xyz/fimugoruwogubosora0l8go.pdf
    • https://cdn-cms.f-static.net/uploads/4493227/normal_600b300b9c795.pdf
    • http://astropsychology.website/moxizitomuvotupijewedmt1.pdf
    • https://static.s123-cdn-static.com/uploads/4379237/normal_5fec9be14d5ec.pdf
    • https://static.s123-cdn-static.com/uploads/4370273/normal_5ffa5d95db5c8.pdf
    • http://hookup154.online/zifevusagvtm0z.pdf
    • https://cdn-cms.f-static.net/uploads/4501975/normal_602f61327b229.pdf
    • http://avtoshkola-region26.ru/33428905259h7h4s.pdf
    • https://zuzidoparifiga.weebly.com/uploads/1/3/5/3/135302874/32680.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/32a4e50e-51bb-4dfc-9810-313022c5b0b6/zejisuwoluxuxenunitokobo.pdf
    • https://uploads.strikinglycdn.com/files/e6221d04-f43f-4d40-8884-72971330f2bc/gofapexudevovagujerig.pdf
    • https://uploads.strikinglycdn.com/files/a3d338fa-f062-4cc9-a88a-10743c0a02df/define_hypersensitivity_in_autism.pdf
    • https://64e1471b-64f8-4582-b127-b1692805dd1b.filesusr.com/ugd/507a3d_0388a7ac010f42b6bda76483b05acf43.pdf?index=true
    • https://34e2f0dc-0077-42bd-a047-efa2502e92af.filesusr.com/ugd/8a05ec_30297e285e184cf595653ddaf54304ba.pdf?index=true
    • https://a5c93f4c-8567-4308-be4d-c56d356f510a.filesusr.com/ugd/bb3bf9_dd462b3ee60b4c14b13853ba55bf5af4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/56959032-4681-4568-8b2e-4b8ec727a3ea/how_to_get_acceleration_physics.pdf
    • https://77a48bbd-706a-45f8-a225-ac1cc02029d7.filesusr.com/ugd/3be48b_5ac2e71f016d4f8684e055e4c9e58ede.pdf?index=true
    • https://5610d23c-e099-485d-ada5-1c5fec8f01b3.filesusr.com/ugd/97e063_20f020d440e94442b29747ae28f223d9.pdf?index=true
    • 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_off0000e89b.bin
b58c231da06b549612cb079267ed33c3602db322829906cdd5a70199dde1d397		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE89B 5664 bytes
font_01_sfnt_off0000fbc3.bin
b0df42dd496578ef61078ed46973e21b988ddb4d0ed9566736f200fa17f19672		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC3 11024 bytes

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