Malicious PDF — malware analysis report

Static analysis result for SHA-256 3167be4724b1c75d…

MALICIOUS

PDF

70.9 KB Created: 2020-11-20 00:14:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5d3fd5f20a87f7478016cb01f9a40942 SHA-1: 9d3fc31ce09ab27d2b58613aff4f5f5ccf415ef7 SHA-256: 3167be4724b1c75d363ed69abf9c8915812672b8c7a5fca0f2736677a5043ea6
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafffi.ru', which is suspicious. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to redirect users to a potentially harmful site, possibly for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/strik?utm_term=barbie+and+the+magic+of+pegasus+full PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/wuguwukurarejezef.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/fazulab.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/340_mm_equals_to_inches.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/071286d8-0ac2-4d4c-b011-c4f9110d21b3/boy_over_flower_japanese.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/bread_recipes.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/bapetovunotulaxogef.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/bus_stop_method_division_worksheet_year_3.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/segafibojimojega.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/gravity_falls_memes_1_hour.pdfIn PDF document text
    • https://s3.amazonaws.com/sirasu/valuvitazegim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21684c9e-c2fc-4066-9db6-d8055f5be112/82619617124.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/huck_finn_chapter_summary_25.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/58456796592.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_off0000c691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC691 5640 bytes
SHA-256: e085ac5cdff30b5143b55a3144053d9f8e282faee41ebfded9bf05a2bdcaf67b
font_01_sfnt_off0000d98d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98D 11576 bytes
SHA-256: fd3cc9b8eb68c2d5d1512896a5b20d35bd9b2de831fe144147709aa7f2d729e8
font_02_sfnt_off000100c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C1 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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