Malicious PDF — malware analysis report

Static analysis result for SHA-256 6189dc45b3aed108…

MALICIOUS

PDF

67.5 KB Created: 2021-03-01 13:30:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 031841ea61f128ae3d74f401ad5e8fb3 SHA-1: 01e411cfdff7c0a18be6d423d6b2d140dd0203cc SHA-256: 6189dc45b3aed108c7df5702f7e5edde2bfb18d0042a645cd192506230daf702
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=discrete+mathematics+by+kenneth+rosen+7th+edition+solution+manual+pdf In PDF document text
    • http://tirudibemaj.22web.org/chicken_invaders_4_cheats.pdfIn PDF document text
    • https://fologonalufofu.weebly.com/uploads/1/3/4/6/134694067/rujexofila-tekakepefek-kufimitolavix-tumabudelotom.pdfIn PDF document text
    • https://kujadivenudeku.weebly.com/uploads/1/3/5/3/135324903/pomuki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425255/normal_601f3baef33a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489255/normal_5fc5f1c04d9d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403259/normal_5feb4abe2fb66.pdfIn PDF document text
    • http://klossheff.xyz/17919722173j43ci.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387715/normal_5fd0650727b8f.pdfIn PDF document text
    • https://laxatutokowo.weebly.com/uploads/1/3/5/3/135387201/ninuzamajizogejekor.pdfIn PDF document text
    • https://cdn.sqhk.co/tesigasefaxe/d6vreii/onedrive_silent_login_not_working.pdfIn PDF document text
    • https://sesuxaned.weebly.com/uploads/1/3/5/3/135349378/mevovaluw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://degivenumi.epizy.com/bible_dramatized_audio_free.pdfIn PDF document text
    • http://fowidosufos.epizy.com/catia_v5-6r2014_for_beginners.pdfIn PDF document text
    • http://mivowejow.rf.gd/kesuse.pdfIn PDF document text
    • http://fakujijaxubet.epizy.com/neumonia_en_pediatria_colombia.pdfIn PDF document text
    • http://lesadesar.rf.gd/gukopozazutajiwometoziten.pdfIn PDF document text
    • http://wedimotonolisu.rf.gd/27779087398.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_off0000cd3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD3B 5780 bytes
SHA-256: c72252bba02699778c80e463d9de876671058fd7ff99158498ce5b6285bc4b6f
font_01_sfnt_off0000e0ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CE 9288 bytes
SHA-256: 4d3436961df92af7522f0895ee76b409caeaa715a3005f07207ab5acef70d0f5