Malicious PDF — malware analysis report

Static analysis result for SHA-256 3191d3cd11976909…

MALICIOUS

PDF

71.6 KB Created: 2020-12-29 21:47:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 16544fb17929fd9cb4c4ca30ff06e955 SHA-1: 0703ceda03b0d499964b886b57891ec3139be672 SHA-256: 3191d3cd119769096e7a20d0ec58a45f12dc5674fafd67341ffc86f97e7bdb5d
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 0.9997

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://traffmen.ru/strik?utm_term=car+race+crash+compilation In PDF document text
    • https://cdn-cms.f-static.net/uploads/4490001/normal_5fa920c947d94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376127/normal_5fd7d5670e51b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f96579cc2ce0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459170/normal_5fd7dfbf3f793.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/kalanejaxutilif/script_html_template_web.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/aranyakam_malayalam_movie_song.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/29758085126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ff1fc7c-7853-42af-8790-60659f1a7e29/jovimafebelagojigow.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/fiber_optic_cable_test_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f00da9e6-6c5e-44b6-9974-8ae4af894181/shiny_pokemon_let_s_go_pikachu_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/bumidewizovegukufu.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_off0000dcef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEF 5076 bytes
SHA-256: 1cd0ce3292a00965f27584631ce0e8c1611bf7b30954e8ad62e3d016afbdaa19
font_01_sfnt_off0000ee02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE02 10368 bytes
SHA-256: 8de8c99c4637685e041ec9ed07b07ba6b702e85e57713b568386ad6f60e4036b