Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ab118393bba5ec1…

MALICIOUS

PDF

60.4 KB Created: 2020-12-28 17:15:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd94b6c6e4ff31bfe62cb13cccbf1947 SHA-1: 030ef8c069b30f0a1839902a1b2dae4eee08de4f SHA-256: 4ab118393bba5ec152f4ae8d306b56c5a1e254c7aa36106f97bf0feb547f2364
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains an embedded URI pointing to 'traffine.ru', which is likely part of the phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/strik?utm_term=tunnel+rush+unblocked+games+99
    • https://cdn.sqhk.co/govovazeket/tngcgfS/black_desert_online_crafting_tools.pdf
    • https://cdn.sqhk.co/lunapolakezo/ijbhddm/muxogubum.pdf
    • https://cdn-cms.f-static.net/uploads/4501486/normal_5fe9567c8b392.pdf
    • https://cdn-cms.f-static.net/uploads/4379719/normal_5f93422d7724e.pdf
    • https://cdn.sqhk.co/moviferu/ifhcccf/alchemist_certification_elder_scrolls_online.pdf
    • https://cdn.sqhk.co/xaxovowupofa/r2C5yie/fear_the_walking_dead_season_10.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bawalidamovidud/cereal_box_template.pdf
    • https://s3.amazonaws.com/betefowubevat/konulalud.pdf
    • https://uploads.strikinglycdn.com/files/946e1ca7-0a50-4c5e-ba51-e6f8bd3537e9/jurufububuxekim.pdf
    • https://s3.amazonaws.com/zarelusipofox/99630356068.pdf
    • https://s3.amazonaws.com/muxegeza/pt_sans_caption_font.pdf
    • https://s3.amazonaws.com/wivunonovef/69148171866.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_off0000b20a.bin
8e3f403f036b71bc228b754fd5ba9a6ac23636e7afba574925d876252917d2f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB20A 5664 bytes
font_01_sfnt_off0000c515.bin
267e49df8f6fb3778a4a1cfe3ac7fa5883a907ed32ec446d5680405badb15bac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC515 9392 bytes

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