Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b1485905f893cd0…

MALICIOUS

PDF

71.4 KB Created: 2021-03-01 12:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2e050da6c2ff646ed62a24da1848d518 SHA-1: 9d892d5a56375dac694797d13206d923575bbaa3 SHA-256: 4b1485905f893cd0eb7dce09598acb9ac8e011e7580af375527a433b4182c55f
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://zajinet.ru/award?keyword=the+disaster+artist+book+amazon PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413697/normal_5ff578201a4c3.pdfIn PDF document text
    • http://arnautmebel.ru/jekebenenozolw3al.pdfIn PDF document text
    • https://momigetufi.weebly.com/uploads/1/3/4/8/134876151/4245e69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416500/normal_6007a77867e49.pdfIn PDF document text
    • https://dinadexoliba.weebly.com/uploads/1/3/6/0/136091941/pekorasatojax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410674/normal_603552ef94eff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403960/normal_5fdbb790685a8.pdfIn PDF document text
    • https://xegoratan.weebly.com/uploads/1/3/2/7/132712572/fekozipezidodaj-lijefasabalow.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/hfxijgd/crossword_clue_summary_8_letters.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/fG7vgh9/zaromatutorom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465142/normal_5fe60fcd068f0.pdfIn PDF document text
    • http://detonic-romania.website/war_commander_rogue_assault_forumbje1r.pdfIn PDF document text
    • https://serewutedirafam.weebly.com/uploads/1/3/5/3/135339767/5735188.pdfIn PDF document text
    • http://gagimubu.mywebcommunity.org/75507920678.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472793/normal_601240ce29975.pdfIn PDF document text
    • http://teagreen.space/dufezoforatadaz9slr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420917/normal_60303d6250c93.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://novogizeboje.myartsonline.com/2045859526.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_off0000db47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB47 5236 bytes
SHA-256: e711291eec54b25e746dd3c56354e1dbbea018455a3658075a81bdcc1ce925cc
font_01_sfnt_off0000ecef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEF 10412 bytes
SHA-256: d35269edb238af6f2a40440be7a8df7770197dbdfdfac8f94ef1a85541d4f5d1