Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec201a3a167db924…

MALICIOUS

PDF

57.2 KB Created: 2020-12-03 20:26:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8e6abe11aa065871051df8acdd073ffd SHA-1: 12b8a2f100728d3f9062d4dbc756325eff35ea44 SHA-256: ec201a3a167db9247f9339fae5c59ed79f718814f1a01d4069648153c42fa5ed
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'https://ggtraff.ru/strik?utm_term=classic+wow+paladin+talents'. The ML classifier also flagged the PDF with a high probability of being malicious. The document body, though heavily obfuscated, contains text related to 'classic wow paladin talents', likely serving as a lure.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/strik?utm_term=classic+wow+paladin+talents In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369927/normal_5f8f8773423b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382617/normal_5f8cfb6663a92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386076/normal_5f91ac332989a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426541/normal_5fa1216a2a012.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412161/normal_5f9387c258bf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420597/normal_5fa609491c7e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381762/normal_5f92b19477b24.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec359c44-3b17-456f-859f-dea79a2df9de/shellback_certificate_download.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/xuxaperigebi.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/idylis_dehumidifier_code_e3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ee47dad-6b74-41ca-9a21-cd105834e654/conduction_convection_radiation_powerpoint.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f4cbbd7-069b-49a1-8b4f-e72e35ed0e8f/makebuxesunobowodowo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a95c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA95C 4968 bytes
SHA-256: 20a130ffa4749a756aca10398a9b75eaf7b0801f458361de156064d6f53dac6c
font_01_sfnt_off0000ba62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA62 8800 bytes
SHA-256: 2a397370dbba40fa90dd0e89aac58852663d47ee3da96ba21d12d1eb4e8037a8

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