Malicious PDF — malware analysis report

Static analysis result for SHA-256 c544e5226152c5d9…

MALICIOUS

PDF

69.7 KB Created: 2020-12-26 06:18:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 20d6b59e147bbb9220ad270e98747417 SHA-1: d32ccdb71822dfbda24b97ffadb8b18ab4e99926 SHA-256: c544e5226152c5d944c45bbe3394d1e8937fd7451040f7f20d780be1e17667fc
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it redirects to known malicious infrastructure. The ML classifier and ClamAV detection strongly support its malicious nature. The embedded URL, https://ggtraff.ru/strik?utm_term=troll+face+quest+usa+adventure+walkthrough, is the primary indicator of a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

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
  • 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=troll+face+quest+usa+adventure+walkthrough In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387573/normal_5f922cf31562a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490519/normal_5fad2a1571195.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427095/normal_5f9ba558d8496.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496818/normal_5fae9f0bbc81d.pdfIn PDF document text
    • https://cdn.sqhk.co/muzexeragod/cgfjgG3/laser_quest_tulsa_ok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372702/normal_5fbce97d90d76.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366961/normal_5fe53ae2e733f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/easl_clinical_practice_guidelines_hcc.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/goxadifajun.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/dark_souls_3_boss_guide_in_order.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6f8ad3b-aaf8-4c77-927b-3c027c53458a/61264206011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8a56e01-d48e-456e-8538-e00f35c15350/pipegunaxome.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/roduxarebuxazar.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/bekhayali_acoustic_song_ringtone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c558783-2fbe-4f96-993c-e1a7fcca3ffe/sobenefagunob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9801248d-2c39-4640-966d-f8bf11f114d6/wosivatuvunid.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_off0000d20d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20D 5572 bytes
SHA-256: 754a8388935e3eef5214779ae5342e422540be3d9258cf1e6e042797eb4c5e2d
font_01_sfnt_off0000e507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE507 10732 bytes
SHA-256: d9cd47efbc8e1c60c5903c3c0c668db8c0642f080fcbdc7925da9fdcac7a8a17

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