Malicious PDF — malware analysis report

Static analysis result for SHA-256 4904424a5e8d2d1a…

MALICIOUS

PDF

72.4 KB Created: 2021-01-26 22:41:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 43ceb2418283429d685ce1edff6e2241 SHA-1: d92419a5a91971636928058a50f4e88ac083edcf SHA-256: 4904424a5e8d2d1afa2a7781c3fb436676e25b4316d9530d01c95c503d73468f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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/wb?keyword=mix%20colors%20to%20make%20purple PDF link annotation
    • https://cdn.sqhk.co/merodobiweve/utiiif1/beach_buggy_racing_2_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/bawusipa/jkzgiid/round_cookie_cutter_set_canada.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482623/normal_5fc728d7a9f07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465565/normal_5fd23f86aaf0d.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/gihNiCA/free_cake_decorating_courses_near_me.pdfIn PDF document text
    • http://torevifij.iblogger.org/laboratory_skills_assessment_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/pojuwudedi/gf1ific/nick_jonas_wife_movies.pdfIn PDF document text
    • https://cdn.sqhk.co/pasivuzuke/ZEOjbii/bubble_dragon_pop_classic_balloon_shooter_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369498/normal_5fce14a379f4a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493282/normal_6001d9c3ab7c3.pdfIn PDF document text
    • http://tipografiyav.moscow/catch_fantastic_beasts25d9b.pdfIn PDF document text
    • http://basepati.22web.org/bhairava_geeta_full_movie.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://putojoner.rf.gd/98349841076.pdfIn PDF document text
    • http://sujonereduvuk.rf.gd/bully_lite_apk_obb_200mb.pdfIn PDF document text
    • http://mobisojew.epizy.com/povogukatajenukusa.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_off0000dee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE2 5216 bytes
SHA-256: cc9407042f27b3e679686a54d506035fbebc53294f6f2253af57dc9aa8e3cf69
font_01_sfnt_off0000f098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF098 10648 bytes
SHA-256: ed604f366990c7fcf1a67c4e8061f39c43e72df2d29dcbe9fb174c9a7663e23b