Malicious PDF — malware analysis report

Static analysis result for SHA-256 01cb85b0dcda7768…

MALICIOUS

PDF

77.2 KB Created: 2021-02-03 21:27:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fe892dc8bf3d259250f43596360110fc SHA-1: 74023e3f168fdadb3b82a60ae27c7607c4be2cf2 SHA-256: 01cb85b0dcda7768de5feca8de2c15d162e90bb6561257d9d3ebc3e7f7cbfe9c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://maypoin.ru/123?utm_term=i+am+jackie+chan+book+pdf PDF link annotation
    • https://cdn.sqhk.co/vujagefamig/kSlfjil/fun_activities_for_distance_learning_kindergarten.pdfIn PDF document text
    • https://cdn.sqhk.co/gotakavapu/VjaQhaL/84653734403.pdfIn PDF document text
    • https://cdn.sqhk.co/lutidofele/MgghgMB/tebebamuvudiku.pdfIn PDF document text
    • https://cdn.sqhk.co/sunidoxil/pihjcjh/bumupijofuvifug.pdfIn PDF document text
    • http://piredvizhnik.com/dikovijebaz26l6u.pdfIn PDF document text
    • http://sutiwejepeb.22web.org/10387751264.pdfIn PDF document text
    • http://fajutixosisi.22web.org/detailed_technical_design_document_template.pdfIn PDF document text
    • http://kudretbozaci.com/cadillac_escalade_2007_user_manualbmydh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://babematalal.epizy.com/unstoppable_god_sheet_music_free.pdfIn PDF document text
    • http://vodupuginotipir.rf.gd/ambassadors_of_christ_new_songs.pdfIn PDF document text
    • http://fekerudosepu.rf.gd/27658272124.pdfIn PDF document text
    • http://lumawasisoxo.rf.gd/gabimufe.pdfIn PDF document text
    • http://vudujufilax.epizy.com/fallout_4_ps4_trophy_guide_and_roadmap.pdfIn PDF document text
    • http://begosene.epizy.com/15812878607.pdfIn PDF document text
    • http://vufagozujidivu.epizy.com/guidecraft_arts_and_crafts_center_set.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_off0000f30a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30A 5308 bytes
SHA-256: 3e4d5ea75be679985288e68b590c81c3c34869473213710dd1b2f151da31d452
font_01_sfnt_off000104f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F8 10240 bytes
SHA-256: 4bdb5b1473b9ffa3c4a28d57ad72be8fd7a106e38a967e80191a63ac3d9be05b