Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3f4dc7f662450ce…

MALICIOUS

PDF

71.1 KB Created: 2021-03-01 13:33:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ef5e6d4fc3d6a40939ca0c506337613d SHA-1: 64704c19fa898f48a8e9309ce678c92d7f505913 SHA-256: e3f4dc7f662450ceed062fabc25ae29fb528688d0189cc9dbf4b63d207d40b33
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/wix?keyword=the+rules+of+wealth+pdf+free+download PDF link annotation
    • https://cdn.sqhk.co/wasusoguba/fFviahf/ninja_jump_exercise.pdfIn PDF document text
    • https://cdn.sqhk.co/pomorezolo/QiaA11q/weekend._com_app_reviews.pdfIn PDF document text
    • http://lobulezinovux.medianewsonline.com/wejuberekez.pdfIn PDF document text
    • https://cdn.sqhk.co/tosuwukiwate/il2jggf/wulesexokadurukup.pdfIn PDF document text
    • https://cdn.sqhk.co/livukigelo/fMjijcS/grand_theft_auto_san_andreas_cheats_ps2_invincibility.pdfIn PDF document text
    • http://vowufijetapiko.sportsontheweb.net/fuzuzuw.pdfIn PDF document text
    • http://mastera-saydinga.ru/bayes_theorem_derivationfkf6m.pdfIn PDF document text
    • http://pazifelurup.medianewsonline.com/schaums_outline_of_differential_equations_4th_edition_solutions.pdfIn PDF document text
    • http://iblack.space/foxugarodeujf5.pdfIn PDF document text
    • https://cdn.sqhk.co/luwiwaduna/Jiaihgg/download_mod_among_us_imposter.pdfIn PDF document text
    • https://cdn.sqhk.co/jagojixego/fUejbJX/cat_physics_level_22.pdfIn PDF document text
    • http://amaryllis.space/ftl_ship_unlock_guidemvlt7.pdfIn PDF document text
    • https://cdn.sqhk.co/tijatabov/haidihz/wujusobunimoxawonivebiwa.pdfIn PDF document text
    • https://fekebejoluxoji.weebly.com/uploads/1/3/4/3/134309121/kelotuvapapamuxeviz.pdfIn PDF document text
    • http://lilubaxubaxulu.sportsontheweb.net/48201874087.pdfIn PDF document text
    • https://bumobuzeki.weebly.com/uploads/1/3/4/4/134477779/c7417a325513c.pdfIn PDF document text
    • http://juwoniki.getenjoyment.net/senini.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/aggBmZ7/47379287430.pdfIn PDF document text
    • https://cdn.sqhk.co/valujoper/zjjiehV/fuel_line_connectors_uk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dasobiviwadodaj.atwebpages.com/25003144283.pdfIn PDF document text
    • http://benamow.myartsonline.com/65624892349.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_off0000d99d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99D 5168 bytes
SHA-256: b4931b0dca30f63d9eacf942b9af37861247c98b9792b6a66134735853fa95bf
font_01_sfnt_off0000eb3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3E 10332 bytes
SHA-256: c21bda95164c54b21c11774d2f82a509113e99c367f60302c0b2b7d3b5cee9e8

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