Malicious PDF — malware analysis report

Static analysis result for SHA-256 866ce197611bfdf5…

MALICIOUS

PDF

72.4 KB Created: 2021-02-26 00:54:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a144f80d52dba3ef4bf71568b747e361 SHA-1: 13cab824d175d7922ec36054e4327bdae0e8227f SHA-256: 866ce197611bfdf5f63d94ea65c10616af738469761b9ea5e2e80b29b72a22ba
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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/award?keyword=echo+cs+400+chainsaw+replacement+chain PDF link annotation
    • https://cdn.sqhk.co/tokafumotebi/jjjj5ia/business_management_controversial_issues.pdfIn PDF document text
    • http://mavpa.fun/50410148017vqh7f.pdfIn PDF document text
    • http://kagutakonupana.iblogger.org/how_to_make_cajun_chicken_pasta_like_cheesecake_factory.pdfIn PDF document text
    • https://cdn.sqhk.co/zexukobesu/RTF6dF1/13808476208.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425235/normal_6033540c8e906.pdfIn PDF document text
    • https://gonufefimexej.weebly.com/uploads/1/3/4/8/134892828/6984196.pdfIn PDF document text
    • https://takokapaxuv.weebly.com/uploads/1/3/0/9/130968961/8900651.pdfIn PDF document text
    • http://mexicotop3.xyz/gujifewuriwipokovagane58nm.pdfIn PDF document text
    • http://shoop-fn.ru/24213258745ailol.pdfIn PDF document text
    • https://cdn.sqhk.co/rajexizeba/fKjbjgK/color_splash_photo_editor_2020.pdfIn PDF document text
    • http://lnstagram-verifedbadge.com/outdoor_first_aid_kit_essentials66d3u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fixorafusadaxuk.rf.gd/child_support_guidelines_in_ga.pdfIn PDF document text
    • http://leragirifodoz.rf.gd/bittorrent_vs_utorrent_speed.pdfIn PDF document text
    • http://dibiremiva.rf.gd/pesafofodidomi.pdfIn PDF document text
    • http://wofulagonem.epizy.com/how_long_does_a_ryobi_generator_last.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d09a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD09A 5240 bytes
SHA-256: c61ff8dc33cad45a3d630a65c106a46915e354742f082449a3ae25365e9e7d62
font_01_sfnt_off0000e241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE241 10428 bytes
SHA-256: b35b0928ad270ae34ff5185ff7ed1a465293c91c1abd674f8b2fd4643c4b10e7
font_02_sfnt_off000105d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105D9 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c