Malicious PDF — malware analysis report

Static analysis result for SHA-256 c97327dcdd022b84…

MALICIOUS

PDF

76.2 KB Created: 2021-02-19 20:50:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 26aebbdb3ce064ad700ce0f2e46dd9fc SHA-1: 4d0c53104fa2779bf1e609ae19c0e5ccd1f26394 SHA-256: c97327dcdd022b844dc3b761b70c1b997cf2460e676c282482d374849bc2ab49
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://bologen.ru/123?utm_term=toni+morrison+recitatif+race PDF link annotation
    • https://cdn.sqhk.co/bogovureg/iesjcNl/fuxumiwewumowagebokizi.pdfIn PDF document text
    • https://taxudomajifi.weebly.com/uploads/1/3/4/1/134108655/ba19dc6.pdfIn PDF document text
    • https://cdn.sqhk.co/bapuwanuvadi/ibNtifj/we_ll_cross_that_bridge_meaning.pdfIn PDF document text
    • http://usesucre.pro/zesuvugexovajnqwr.pdfIn PDF document text
    • https://zizuvikugit.weebly.com/uploads/1/3/1/3/131384696/8746488f5ceaac.pdfIn PDF document text
    • https://gudojovevisepu.weebly.com/uploads/1/3/4/3/134314990/8641202.pdfIn PDF document text
    • https://tuvaxijilitug.weebly.com/uploads/1/3/4/6/134668501/remiguzek-dasamipemadogi.pdfIn PDF document text
    • http://odemebayisitrafik.com/aromatic_nucleophilic_substitution_reactionv5tjk.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/geYEheM/impossible_bus_stunt_driving_offroad_bus_driving_school.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/ZInhdra/singstar_mic_app_not_working_ps4.pdfIn PDF document text
    • https://lewuroluloxujul.weebly.com/uploads/1/3/4/6/134678017/vegumero-wifegulef-najudidakaz-feditetumoleb.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/gjKFjgn/pelujabakil.pdfIn PDF document text
    • https://bemebedutor.weebly.com/uploads/1/3/4/6/134624352/95a268.pdfIn PDF document text
    • https://cdn.sqhk.co/fovomesit/ggiaiel/jane_s_farm_farming_game_build_your_village.pdfIn PDF document text
    • http://ig-copyrightnotice.com/amnesia_treatment_guideline2z0u7.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/kozibowisenatu/plataforma_acceso_remoto_portal_empleado_aragon.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/rafilorafagemev.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/funomunesojelobike.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCD 4944 bytes
SHA-256: d6ca526a40849d76de63765774072bad7256c52f425556be8f8aa3ffd364debe
font_01_sfnt_off0000fd84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD84 11028 bytes
SHA-256: 5444e242c087e5bd33f66b1747891c65f31a17c4b111b39ec6b97bac52c559d9

Open this report in the interactive analyzer, or submit your own file for analysis.