Malicious PDF — malware analysis report

Static analysis result for SHA-256 232253b9762635a6…

MALICIOUS

PDF

64.0 KB Created: 2021-03-01 20:18:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eab44492ed20798432194e8230d06526 SHA-1: 0461a498e9d6e24b234585ba3262d9ea411d522f SHA-256: 232253b9762635a6c3a328623b890cde1fd8e23a8fa2879cb77d6a4beaaf5636
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://bologen.ru/strik?utm_term=bolens+garden+tractors+for+sale+in+ontario PDF link annotation
    • https://cdn.sqhk.co/vabedesi/Cnpjdxv/vufib.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/fOsUkhb/phoenix_arcade_game.pdfIn PDF document text
    • https://rediwugozuza.weebly.com/uploads/1/3/1/4/131438197/ced697958635bda.pdfIn PDF document text
    • https://cdn.sqhk.co/kosaboze/2jjfhfj/hachi_hachi_riverside_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/Tgfjfgj/18783951078.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470543/normal_5fd6196b2721f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497369/normal_601cdaacc287d.pdfIn PDF document text
    • https://begagezegitajaj.weebly.com/uploads/1/3/1/3/131398046/befumebidowajodopeji.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/zhbgfhf/obstacles_meaning_in_tamil_language.pdfIn PDF document text
    • https://zikepasut.weebly.com/uploads/1/3/4/1/134108801/8613241.pdfIn PDF document text
    • https://mifopubulu.weebly.com/uploads/1/3/1/6/131637027/wabofodog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496605/normal_5ff1ad1e9796b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_6010b6ef25bae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413375/normal_5fc7563f9f134.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369909/normal_6010e192e9c97.pdfIn PDF document text
    • https://cdn.sqhk.co/balaragu/kgfiegg/lenovo_ideapad_3_14ada05.pdfIn PDF document text
    • https://cdn.sqhk.co/manaruparil/lzjbTge/39532901410.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jutibigata.epizy.com/motorhome_dinghy_towing_guide_2013.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_off0000c009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC009 5240 bytes
SHA-256: 13a3f36943aa100617a88d24017b21c7ec3d1cc1648fadbf7313240ff3ba6716
font_01_sfnt_off0000d1ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1EC 9600 bytes
SHA-256: ee07240fb3440d9360f8f335d140c39fa4a1e60841f380cb9ddf41b8dbe70009

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