Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f5534e5b952ede…

MALICIOUS

PDF

66.3 KB Created: 2021-02-28 14:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2f671eef9ad7bc7af2e02981eee53633 SHA-1: a081be50c5f615f798d9e51749a636f03a123233 SHA-256: f2f5534e5b952ede3dc8e1fb1c89e5753536dd4d60acf09c5d57b56575cdc139
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://leonvi.ru/wix?keyword=fermentation+worksheet+ks3 PDF link annotation
    • https://cdn.sqhk.co/kumipexa/I3jg1jf/51541863945.pdfIn PDF document text
    • http://limebago.iblogger.org/sample_warranty_letter_format.pdfIn PDF document text
    • http://gifawel.22web.org/92385609136.pdfIn PDF document text
    • http://tublitalia.space/626717490180ex1.pdfIn PDF document text
    • https://cdn.sqhk.co/bawusipa/ihHhfZ0/28418846564.pdfIn PDF document text
    • https://pesakezered.weebly.com/uploads/1/3/4/7/134729162/terexorazatizeso.pdfIn PDF document text
    • http://juzajikadig.22web.org/bypass_survey_to_file_online.pdfIn PDF document text
    • https://cdn.sqhk.co/nilamemiw/kJiecVp/animals_names_and_sounds_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/xewazezikufi/cnjb5RM/44186281043.pdfIn PDF document text
    • http://sexugaweguko.iblogger.org/naxidufisopis.pdfIn PDF document text
    • http://tuvetetin.22web.org/4753233528.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lidiwerefibe.rf.gd/zigejezujizeludimo.pdfIn PDF document text
    • http://saguzexebotaju.epizy.com/asp.net_mvc_dropdownlist_selectedindexchanged.pdfIn PDF document text
    • http://dofanetanezuji.rf.gd/gafitimabo.pdfIn PDF document text
    • http://sexesivakolek.rf.gd/yahoo_cricket_app_free.pdfIn PDF document text
    • http://fipamopiwip.epizy.com/adam_lambert_velvet_album.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_off0000c846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC846 5168 bytes
SHA-256: b7697caf9e841cb4d1f20e1ce9b518bbf8288bfd371b8880e76b35a17e6c2c49
font_01_sfnt_off0000d9c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C4 10008 bytes
SHA-256: d66d11d9889ba6993124bf93ab757753bc8003645a2d6a8fba4e7f427d96c4d0