Malicious PDF — malware analysis report

Static analysis result for SHA-256 96071157e32c7040…

MALICIOUS

PDF

80.9 KB Created: 2020-12-19 01:06:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ab0a8c9ce3303b094763322feafc00b0 SHA-1: bc27334c4d1cb495a7a88cee3e257023430f3dca SHA-256: 96071157e32c70400142250a29615e88cf9a7624c58767ab5b4c1d5b0df8633b
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, traffking.ru, which is disguised as a link to free sheet music. This indicates a phishing attempt to lure users to a malicious site. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffking.ru/aws?utm_term=free+public+domain+sheet+music+piano In PDF document text
    • https://cdn-cms.f-static.net/uploads/4423195/normal_5fbd250dae06d.pdfIn PDF document text
    • https://gebulofafilo.weebly.com/uploads/1/3/4/7/134717894/xirezi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379618/normal_5f98a4e4dbdd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453332/normal_5fba923103767.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/b2500cb8-e8ea-47ff-9e4d-4353908493f7/nudaberukodipotuno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91eb7c21-0215-4a40-baa5-f1ae328523b1/5.3_chevy_engine_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14e357cb-5db8-41e1-9843-2b22956d5c67/55110053553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58ce7f3b-ca56-43db-9e4e-cf43e8cd951c/77184078129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f9d5cb0-e0cc-4320-bd08-35913c475f85/07_gsxr_750_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a78c87d8-7e0e-451b-9a53-4e689c0c27fa/presidential_volunteer_service_award_hours.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB52 5408 bytes
SHA-256: f4d2548866b6d5df5b2012f694176b375bf143251c12010874b32f546db227a8
font_01_sfnt_off0000fd7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7E 10612 bytes
SHA-256: 013eb9a9bcecd2490867fa59d1be8cf07a728bfd320d31068bec54ea7507eed7
font_02_sfnt_off000121b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121B6 16100 bytes
SHA-256: dbe3dd64dc066f428802739f18684eaf08c446fcda8cbe88d420f1ef9ee6b29b

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