Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff280e35fe67abf9…

MALICIOUS

PDF

59.1 KB Created: 2020-12-24 04:41:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6d8085f1868940680d24b3b727714538 SHA-1: beca847e1afdc17839aef1f56837ecd8f27f443f SHA-256: ff280e35fe67abf9fc00344d1f94805b5f3ed010eab9127e3317c48aa720a375
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://gettraff.ru/strik?utm_term=classic+quadgear+extreme+atv+bag In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/mezevoxinokimuwamibu.pdfIn PDF document text
    • https://cdn.sqhk.co/momebuman/ijentia/99842668153.pdfIn PDF document text
    • https://cdn.sqhk.co/xisiwuba/jBhhib9/5516173220.pdfIn PDF document text
    • https://xonedapu.weebly.com/uploads/1/3/4/6/134654428/jijisurozet.pdfIn PDF document text
    • https://cdn.sqhk.co/dakagugi/rZ1hjif/i_am_monster_idle_destruction_mod_apk.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/322f633b-5c8b-4ccf-a295-eb4d2e4dbaa0/fall_river_rod_and_gun_club_massachusetts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f394579-ea31-4893-8aff-5e3b7b261331/loketitenodixunabozesol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/912340d2-026c-47f0-a17a-84662c355cfa/xigugolodote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a940385b-26fb-4c7e-83b2-b98b1676d02e/30441500131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fbefa4c-a322-4c81-9a9c-e900064433e7/15246747897.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e660278-e102-4352-8a1f-e02bb357f2ef/bumopatadokozurofanoli.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_off0000a9db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9DB 5556 bytes
SHA-256: dfdd9f653ab36ff26d57c6f7de66253c97c52d3ec7bb8fd5796b7d35284ee9ed
font_01_sfnt_off0000bca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCA0 10472 bytes
SHA-256: 8f12d5d1a83ccb73056f005fda43ce3a47abc3abd6d4f69f5e1800f4a1c87339