Malicious PDF — malware analysis report

Static analysis result for SHA-256 95fe3954af91c58e…

MALICIOUS

PDF

67.6 KB Created: 2020-11-27 01:56:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dc0aecf5daee4c0740015c1cc400d371 SHA-1: bb14d915f73c3f2f317bc03a6e925a29f09c8a07 SHA-256: 95fe3954af91c58ecd794a869caa68fcb96769a709a32c3ba9828f3853b2f061
156 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 embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/strik?utm_term=metaphors+used+in+their+eyes+were+watching+god PDF link annotation
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/afb3c.pdfIn PDF document text
    • https://mefevujeloz.weebly.com/uploads/1/3/4/3/134317202/6000297.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/fotevaxu.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/lowivikena-rusuf-zakaguboto-mozagibol.pdfIn PDF document text
    • https://dosijarirolid.weebly.com/uploads/1/3/4/6/134668623/kosamope.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/76e8fcfe-c250-494b-9d6d-5bcb0b994f12/clinical_emergency_medicine_book.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/jupirojuxiniwipidib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/039c1cda-0bb4-4927-94a3-bef3e9dc808b/candlestick_para_traders.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/072a5d96-ebbd-4eb9-9f84-d544877d6a04/86152020253.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd61cc58-d925-4829-b613-f8318d37bbcf/actiontec_gt784wnv_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d34ce05-2549-4cba-8b52-8a5c0c805c74/vivedov.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_off0000ccd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD7 5504 bytes
SHA-256: 501cc7f58352e4192d10cd5b20f6e6fbf1d83d194fc6406727d11e8c33d639b4
font_01_sfnt_off0000dfaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAA 9856 bytes
SHA-256: 7f457f57bfe6b3ddf27a9803b2c08c6cf4eb633bf3e659e6a5cf963a2c286c12