Malicious PDF — malware analysis report

Static analysis result for SHA-256 daf268259801184b…

MALICIOUS

PDF

72.1 KB Created: 2021-02-21 06:52:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 921f06b687b02b7030fd5dccaf15053f SHA-1: c771afd24b238263802270861ea89b593edd7319 SHA-256: daf268259801184be2946faa7eaee8bc4e82a08e7ba9c915fbb54c15e21bc521
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/wix?keyword=avan+derm+nu+eye+serum PDF link annotation
    • https://cdn.sqhk.co/pakiwujipubi/ehbZUbW/gowaviraruwevug.pdfIn PDF document text
    • https://vozoduxi.weebly.com/uploads/1/3/2/8/132815828/d6f42d5af95c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426679/normal_600c8f37dead8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422134/normal_601dbd9388fc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410190/normal_5fda723a1fe6f.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/jhcfrjb/mujezewoka.pdfIn PDF document text
    • https://kuboteradaragi.weebly.com/uploads/1/3/1/4/131482952/3816271.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379230/normal_602a0ebe30fbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379491/normal_5fd959f8d9a34.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/icPcdgi/2302307744.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fokozagizek.rf.gd/20232809029.pdfIn PDF document text
    • http://gaxomin.rf.gd/oh_danny_boy_celtic_woman_sheet_music.pdfIn PDF document text
    • http://risuduk.epizy.com/46397517969.pdfIn PDF document text
    • http://fexeledusezeto.rf.gd/javakitijibuzoxeb.pdfIn PDF document text
    • http://gezewezelatemak.epizy.com/62732532993.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_off0000dfce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCE 5088 bytes
SHA-256: ec7219d40c11329e064557c8083bd6accd7875d2ad562086d16224699d499858
font_01_sfnt_off0000f114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF114 10088 bytes
SHA-256: bd105c3acdf7d1f55269124a01382e1b9695d8415b58d99eb0e8f4a19823adc3