Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f13b1210f84992…

MALICIOUS

PDF

76.0 KB Created: 2021-03-02 23:19:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 1ab2bc618b3e80ca587786eefc20091b SHA-1: 9e480e51795bd1e1d15faa09c2789e9242d3a455 SHA-256: c6f13b1210f8499213cc645ab64f89db88a06f1d6298fd704e7634686b78ef32
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains embedded URLs, one of which is directly related to the document's apparent subject matter. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/strik?utm_term=kawasaki+bayou+250+oil+filter+location PDF link annotation
    • https://cdn.sqhk.co/kofosenolo/f8hcgiG/duroved.pdfIn PDF document text
    • https://cdn.sqhk.co/nedabuke/0gkjbjj/projectile_motion_with_air_resistance_spreadsheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414487/normal_5fd16f4e86814.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462726/normal_602101f386dcb.pdfIn PDF document text
    • http://lorenbayi.com/wiwogotanujowalujeredezufmnm4.pdfIn PDF document text
    • https://cdn.sqhk.co/tukawezezo/dTILijW/pan_s_labyrinth_cast_now.pdfIn PDF document text
    • http://idclick.cash/34903086301ozbpw.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/gdiaha9/mi_quizlet_questions.pdfIn PDF document text
    • https://cdn.sqhk.co/gapebeve/1i07ig3/werewolf_online_mod_apk_0._46._11.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/eDgf3FL/my_dns_server_is_down.pdfIn PDF document text
    • https://cdn.sqhk.co/xolanikipiz/7tugcjd/43820838585.pdfIn PDF document text
    • https://cdn.sqhk.co/lufezeralon/Ujijf9K/93675466596.pdfIn PDF document text
    • http://urro-hu.com/delete_watermark_online_freeulw7g.pdfIn PDF document text
    • https://cdn.sqhk.co/nazopekujavi/d5ODVih/68458230945.pdfIn PDF document text
    • https://cdn.sqhk.co/puxolika/hcidHjh/belojanixemutota.pdfIn PDF document text
    • https://cdn.sqhk.co/kominepoli/dAichfF/buxokejozasijosakosutix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ea82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA82 5640 bytes
SHA-256: 2d7dfc352fd8aaf8474f7385fc92277263794b74a3386d879404334e386be687
font_01_sfnt_off0000fdee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEE 10956 bytes
SHA-256: 7c07f67c58902f296e17de2b1e90ded17037f83d2feb134e8472f9882724c3b7