Malicious PDF — malware analysis report

Static analysis result for SHA-256 840c253b1a3d1e5e…

MALICIOUS

PDF

64.5 KB Created: 2021-01-21 10:25:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: 90ba539d191578431003110726bb8cc9 SHA-1: 317e761ed82b95b503597af88fe170257bf3f4ab SHA-256: 840c253b1a3d1e5e89c7f889d6b1e08867b09843147b4dc9f7e9eec31d05e5c1
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://trafftec.ru/123?utm_term=mortal+kombat+cassie+cage+deviantart PDF link annotation
    • https://cdn.sqhk.co/vopovaroxamo/heigidV/sync_mobile_outlook_with_desktop.pdfIn PDF document text
    • https://cdn.sqhk.co/kagalitisup/8sMbicM/58925609770.pdfIn PDF document text
    • https://cdn.sqhk.co/maxevurux/ZhhXGij/blockman_go_blocky_mods_online.pdfIn PDF document text
    • https://cdn.sqhk.co/motuvitewodi/Lijjmf5/mewing_definition_science.pdfIn PDF document text
    • https://cdn.sqhk.co/vimexuda/bZzjCjd/49456650593.pdfIn PDF document text
    • https://cdn.sqhk.co/norifasil/ojhzvhd/zombicide_tactics_shotguns_wiki.pdfIn PDF document text
    • http://xobezised.iblogger.org/vuwatifasamato.pdfIn PDF document text
    • https://cdn.sqhk.co/kegufamop/dEibR3l/frontier_fios_tv_channel_lineup_california.pdfIn PDF document text
    • https://cdn.sqhk.co/lopumilekana/hehbjep/reverse_pacifica_fanart.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/sosupejuxofedo/muforasepurokofew.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/kp_astrology_books_bangla.pdfIn PDF document text
    • http://kovejenipo.epizy.com/adjective_form_of_strength.pdfIn PDF document text
    • http://xukaneteris.epizy.com/terminar_email_formal_em_ingles.pdfIn PDF document text
    • http://rezumasalimod.epizy.com/water_animals_images_with_names.pdfIn PDF document text
    • http://pixuxurarosu.epizy.com/plant_cell_coloring_key_answers.pdfIn PDF document text
    • http://bidasumibave.epizy.com/guidepost_books_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/que_significa_estar_languidez.pdfIn PDF document text
    • http://sojisij.epizy.com/circular_motion_and_gravitation.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_off0000bf41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF41 5528 bytes
SHA-256: 57d0c06c690b7cbfa53738fbe34cd363cbafbc7d6f08ecad9c40181cae890450
font_01_sfnt_off0000d201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD201 10272 bytes
SHA-256: 55ac4e23cb4da8943f2d756d0d0c71e3cf30212c76625f5fb3d0c1353ae51830