Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef02f47d806432c…

MALICIOUS

PDF

60.5 KB Created: 2020-12-07 06:15:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49c6ee9a2520c49c8b2bb7279449f511 SHA-1: d754de62bc1b6471b28633319a10cdd6131c49d9 SHA-256: bef02f47d806432c3660a1c5f190ea287975c57a1592a2b7874a305dd617a049
96 Risk Score

Malware Insights

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

The file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafficel.ru', which is likely used to deliver a malicious payload or redirect the user to a phishing site. The document body is heavily obfuscated and unreadable, suggesting an attempt to hide its true purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafficel.ru/strik?utm_term=religious+easter+images+free+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wuniku/time_series_analysis_princeton_university_press.pdf
    • https://uploads.strikinglycdn.com/files/a74b2f69-4e5a-4fd9-aa5a-426690e27514/queen_of_shadows.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd2d9869dfec4f8d10d090/1606233496963/wukubugofixaxotuxasa.pdf
    • https://uploads.strikinglycdn.com/files/bd87dbad-9931-48af-b26c-8f9eb0c0145a/56788064807.pdf
    • https://uploads.strikinglycdn.com/files/d335efa6-8bd0-42dc-befd-b18cd0be250e/module_9-11_study_guide.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0937cb3e0f577115ae22/1606289720543/3215554491.pdf
    • https://s3.amazonaws.com/wuniku/barisal_district_map.pdf
    • https://uploads.strikinglycdn.com/files/6ce3323c-3e2d-4589-afd4-649f0cc8f204/50528814136.pdf
    • https://s3.amazonaws.com/vutame/43296927260.pdf
    • https://uploads.strikinglycdn.com/files/6034021e-f00f-4d5e-b4c8-55806dd739db/2012_volkswagen_jetta_repair_manual.pdf
    • https://s3.amazonaws.com/robumuduluwise/18232001783.pdf
    • https://s3.amazonaws.com/satudifin/reporter_gazeta_amharic_version_vacancy.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_off0000b18e.bin
8167686db7b5c1cf63281884abcc830a64ed93162efb4b52f9b929e00be32648		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB18E 5324 bytes
font_01_sfnt_off0000c3ab.bin
5bfb8c80418d0f927778b34afd74cfa7087e9f8fa535dd6f35b3a64603477c85		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3AB 9980 bytes

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