Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a33af687fba90c7…

MALICIOUS

PDF

66.7 KB Created: 2021-02-21 19:26:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e05bb6ad5f16c58976c1b3a637c24b34 SHA-1: 6238f271bde03c9f0e19814850f8b827c5a3ec25 SHA-256: 0a33af687fba90c76f479bc119aea2952bbb4cad9f382465ac085595799a88a9
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/wix?keyword=psychonauts+boss+guide PDF link annotation
    • http://uscovidcharts.com/57078858987aatxl.pdfIn PDF document text
    • https://famonusowofem.weebly.com/uploads/1/3/4/3/134349488/2d99f1ec7.pdfIn PDF document text
    • https://kufidadifijerid.weebly.com/uploads/1/3/1/4/131407945/bd04e18b76.pdfIn PDF document text
    • https://saworajopasu.weebly.com/uploads/1/3/0/7/130775294/tosinebeguz-bemusof.pdfIn PDF document text
    • https://cdn.sqhk.co/rogenujudita/hbjfvjf/bazooka_boy_level_437_bug.pdfIn PDF document text
    • https://cdn.sqhk.co/jadizefon/bd26k7i/22424914117.pdfIn PDF document text
    • https://pezibufanijazox.weebly.com/uploads/1/3/4/6/134639202/927204.pdfIn PDF document text
    • http://reassurez-moi-fr.info/gibileridisuwhrjit.pdfIn PDF document text
    • https://lovalizivida.weebly.com/uploads/1/3/5/9/135990258/ac96246aae4.pdfIn PDF document text
    • http://omshop.space/ziweperobinagu3jlf.pdfIn PDF document text
    • http://trikolor.site/post_civil_war_reconstruction_planszanpy.pdfIn PDF document text
    • http://13millions.store/microsoft_teams_login_loopl6pi7.pdfIn PDF document text
    • http://copalofa.site/xegoxakowesajapumuzaeoz5q.pdfIn PDF document text
    • http://canonsburglake.com/kidumelelasidigabididiz1qlug.pdfIn PDF document text
    • https://lopatitegadusi.weebly.com/uploads/1/3/5/3/135311006/3284355.pdfIn PDF document text
    • https://tuverasoxodos.weebly.com/uploads/1/3/4/7/134745130/6648829.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c84b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC84B 5316 bytes
SHA-256: c92e92d1d06243f2408df8150ae49e5d82d77ca1510bea00ca050f00605382c0
font_01_sfnt_off0000da68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA68 10412 bytes
SHA-256: 911d31b2636ce2d02884de2a85bfb1a57d70d93a6acaf1d2bb7e67e421d4b199