Malicious PDF — malware analysis report

Static analysis result for SHA-256 d615fcd729fcbc32…

MALICIOUS

PDF

69.7 KB Created: 2021-02-27 17:00:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4251f86c3b3997fa955e63ccfc225d84 SHA-1: f16d40574c1c36d4d231cd127685f7474dbfb171 SHA-256: d615fcd729fcbc326a3f34273f7548a56e50627da084e2fa3b2cf8c8aba8aa4d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/award?keyword=fl+studio+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368978/normal_5fe52c862c6f5.pdfIn PDF document text
    • http://volosaty100.xyz/490755485301qsi8.pdfIn PDF document text
    • https://vudegerolo.weebly.com/uploads/1/3/1/4/131452783/592280.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424666/normal_602fa8fde9175.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393890/normal_5fdc0eb59aa73.pdfIn PDF document text
    • http://trackcreditscore.info/bill_of_lading_form_printable_template0r3mg.pdfIn PDF document text
    • https://kitigenuripoduj.weebly.com/uploads/1/3/1/0/131070171/982337.pdfIn PDF document text
    • http://giocodigital.website/vuzemokijunumavof8i1a2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jivobolalozula.rf.gd/c_program_to_perform_multiplication_of_matrix.pdfIn PDF document text
    • http://furenenivigaz.rf.gd/format_for_summer_internship_certificate.pdfIn PDF document text
    • http://jeliponotetivek.epizy.com/ziwenowukikemodevofib.pdfIn PDF document text
    • http://gukuwet.epizy.com/zemanasafej.pdfIn PDF document text
    • http://segixiw.epizy.com/active_directory_best_practices_analyzer.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/55528020111.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_off0000d84a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD84A 4644 bytes
SHA-256: 221e8c9408eefe6aa1541dc847bcc66e02718897fd0798e181b5d2819cdc9a47
font_01_sfnt_off0000e823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE823 10032 bytes
SHA-256: 66e656d8b3d80b91326fd355ea31825e1af7a94b4fa55df944153ae1fe629917