Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a8d682f374529f5…

MALICIOUS

PDF

73.7 KB Created: 2021-02-13 12:09:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 78f7d47a992cf246ddceed41e34d2b65 SHA-1: a69ab578a0bd97acd5885e2ae476517c298cc1fd SHA-256: 8a8d682f374529f523b691566ab70741d8da410daac3475208ca68f15dd18e5d
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://druttle.ru/wb?keyword=angolan%20music%20videos PDF link annotation
    • http://gramnews.xyz/protect_from_forgery_with__exception0y6ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476294/normal_5ff2d639f4137.pdfIn PDF document text
    • https://wovigapugup.weebly.com/uploads/1/3/2/7/132710676/7917a44.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/4jiQydM/marvel_future_fight_forum.pdfIn PDF document text
    • http://oneshops.space/7491208204105xut.pdfIn PDF document text
    • https://cdn.sqhk.co/fogobewataja/zdxGvgj/puluxazuvunuzid.pdfIn PDF document text
    • http://vitrinachel.ru/utorrent_free_movies_bollywoodthkau.pdfIn PDF document text
    • https://cdn.sqhk.co/sodelaranu/ZSuXjgK/20826014342.pdfIn PDF document text
    • http://7evenrp.ru/35512445713ddz03.pdfIn PDF document text
    • https://cdn.sqhk.co/xefilelo/Obmghji/mobilazaguserepu.pdfIn PDF document text
    • https://cdn.sqhk.co/rularijulen/vFklRjb/silasixovigenuwewid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420586/normal_601d838b5d0c8.pdfIn PDF document text
    • http://labiosdewonda.com/royal_scots_dragoon_guards_bagpipe_sheet_musicbfv4v.pdfIn PDF document text
    • https://cdn.sqhk.co/potonefamuve/cbgcKHs/7_years_from_now_game_soundtrack.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/nefomojuwet/82669765943.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_off0000e388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE388 5212 bytes
SHA-256: f145cf31ec2f4c3f65f6e237c656f2d7095972b59a5fff4f3313930d0077b83f
font_01_sfnt_off0000f544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF544 11212 bytes
SHA-256: d3b0105811efb925f46ee4c3c5f7a0a94b905dfb29ba9e574d1cc610bf910f71