Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6503ab49494c131…

MALICIOUS

PDF

69.1 KB Created: 2021-02-25 23:42:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b2870412d12588af1ddc2f2ae8f75d56 SHA-1: 0581f2d30c18d5be84e8e61ae963a77a2d55837f SHA-256: f6503ab49494c131d88078735c3da7aa3ef7de350c0d6983965f2163464013df
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/award?keyword=mtd+snowblower+service+manual+pdf PDF link annotation
    • https://kezozebajex.weebly.com/uploads/1/3/4/2/134265808/4fb8ba1f985c6.pdfIn PDF document text
    • http://love-your-lips.online/74887468172xxfo5.pdfIn PDF document text
    • http://introdom.ru/war_of_galaxy_wiki_fandomi5xqa.pdfIn PDF document text
    • https://vuvudarekiw.weebly.com/uploads/1/3/4/0/134017261/8cbfe76.pdfIn PDF document text
    • https://cdn.sqhk.co/zixedagiro/zjgjcgc/gerevapapikogisadozone.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/Ugggfjd/artificial_intelligence_robot_sophia_citizenship.pdfIn PDF document text
    • https://cdn.sqhk.co/zojudaje/jf4jdKT/12638055066.pdfIn PDF document text
    • https://duzopotubesafes.weebly.com/uploads/1/3/4/8/134890215/papujadunawatamek.pdfIn PDF document text
    • http://richteam.site/woturiwiradi.pdfIn PDF document text
    • http://amsidgi.xyz/chromium_based_edge_for_android06zhy.pdfIn PDF document text
    • https://cdn.sqhk.co/tamireto/jjdgdjc/kilexuledepopezogoratesos.pdfIn PDF document text
    • https://cdn.sqhk.co/tuvasovosew/fjfhcC4/velixusijuzo.pdfIn PDF document text
    • http://sehq.xyz/five_nights_at_freddys_song_memory_1_hour81bo1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390383/normal_5fc62eaf2fee4.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/jinabom/68961927511.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/army_symbol_photos.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/85740520892.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_off0000d143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD143 5600 bytes
SHA-256: cd4dd5c3960e768d1f1688b93b386ec8043fd784ab49271801124b6001026379
font_01_sfnt_off0000e453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE453 10228 bytes
SHA-256: 5e74fe7dce361405190a45e1173e98aea2ffd290ae09a74bea0c42973aa5b325