Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf7491deaaa6e0af…

MALICIOUS

PDF

71.7 KB Created: 2021-02-19 09:47:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f0028e1f33890b2e59da8fe6ba6f2775 SHA-1: 5cc405dfe4e8c69b55248087d8558a4df0e53b76 SHA-256: cf7491deaaa6e0af30fc46f3653ca24456514d48a524294fe210ff7c937efa7a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wix?keyword=my+experiences+as+an+executioner+pdf PDF link annotation
    • https://cdn.sqhk.co/pobumepova/hoQyfyO/tumumiwotumoralitegurafe.pdfIn PDF document text
    • https://jotabejomunumog.weebly.com/uploads/1/3/0/8/130813846/dc2d57ac6b66c.pdfIn PDF document text
    • http://nofuwev.iblogger.org/narrative_writing_lesson_first_grade.pdfIn PDF document text
    • https://xibemorebag.weebly.com/uploads/1/3/4/3/134355918/823140c8.pdfIn PDF document text
    • https://wixepivod.weebly.com/uploads/1/3/0/7/130775856/natinen.pdfIn PDF document text
    • https://cdn.sqhk.co/fewoxenovof/MqjjhgO/smash_hit_game_download.pdfIn PDF document text
    • https://tevaxuxelajuri.weebly.com/uploads/1/3/2/7/132712575/zilemefijezevoj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vogurapake.epizy.com/wings_of_fire_graphic_novel_3.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/44198753139.pdfIn PDF document text
    • http://rupiroliwon.epizy.com/adobe_illustrator_draw_mac.pdfIn PDF document text
    • http://zubixuguse.epizy.com/what_is_the_average_salary_for_a_data_scientist_in_canada.pdfIn PDF document text
    • http://vufagozujidivu.epizy.com/30456704409.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/19153604023.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/carretera_austral_mapa.pdfIn PDF document text
    • http://busapow.rf.gd/pack_n_play_bassinet_mattress_pad.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_off0000dba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA1 5292 bytes
SHA-256: 1a0893b35cdaded0f7e17034b8de895ae0536c1ab4d97a246130f2db07bdf365
font_01_sfnt_off0000edcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCC 10644 bytes
SHA-256: 42e19e16f54d3dc34918db36c3b1f65bb9e5dd02eec09e6f4606919250e129b7