Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eaf3520402ea1d2…

MALICIOUS

PDF

69.5 KB Created: 2021-02-13 11:40:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e63fa93f5378863374958598983278a0 SHA-1: 22f6c1f691083b6a0e8274715717676fc2af961c SHA-256: 4eaf3520402ea1d22f8f61e844b1eb6ca15262a3e61810710dd828320dcb79b3
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://seumenha.ru/wb?keyword=resume%20template%20singapore%202018 PDF link annotation
    • https://selijexobava.weebly.com/uploads/1/3/1/8/131856120/kekopopa.pdfIn PDF document text
    • http://teasmall.space/25049665233vl5tx.pdfIn PDF document text
    • https://fikobovivinuzo.weebly.com/uploads/1/3/0/7/130739062/4706769.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422148/normal_60277722ac6f1.pdfIn PDF document text
    • https://cdn.sqhk.co/jedelamodafa/L2jLijd/rumumugozaniwezavevufel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370263/normal_6011dc65ad91a.pdfIn PDF document text
    • https://cdn.sqhk.co/sajixobuko/VHjbiid/mac_os_x_movie_manager_for_windows.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482206/normal_5feb574505f0a.pdfIn PDF document text
    • http://bazis-rostov.com/libro_beloved_en_espaolyi9xn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481067/normal_60121dc7bcfea.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojiranat/hMe86hf/wewefukifo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403556/normal_600e28cf6f8fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368251/normal_601b07a76e665.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/tadevewuju/quantico_episode_guide_season_3.pdfIn PDF document text
    • https://s3.amazonaws.com/jugobimuraje/abdomen_agudo_quirurgico_pediatrico.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_off0000d368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD368 5664 bytes
SHA-256: 00d464ee792c2856069f4311df5025e485feb96a4406a8f308ca4d45c867ba17
font_01_sfnt_off0000e698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE698 10236 bytes
SHA-256: e35e508c1606a852ac217108c14f6b3f3e44260f9c54a3ad2fbd9e5db085093c