Malicious PDF — malware analysis report

Static analysis result for SHA-256 afaeb7a1b7dd7564…

MALICIOUS

PDF

71.6 KB Created: 2021-01-10 21:04:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: d55fbe8fd735c0d51a838e91724ee0da SHA-1: 9171377326c4862e64120df57da77cd26b5498c6 SHA-256: afaeb7a1b7dd75642f52a9ebfe7703de2658cd41845eee58293623417c99375d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded external URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to be a lure related to a product manual. The presence of an external URI suggests the document is intended to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffe.ru/123?utm_term=bissell+powersteamer+powerbrush+16971+manual PDF link annotation
    • https://site-1175108.mozfiles.com/files/1175108/vewawisuvilaloputobogutek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476268/normal_5feb94b63d9cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459185/normal_5fe466f79222f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409110/normal_5faa1ecfde186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401559/normal_5fa49c5d6435b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376878/normal_5fd86dc583a65.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/gL1hjiI/24055738434.pdfIn PDF document text
    • https://cdn.sqhk.co/zijikunu/dWGjhfn/how_to_draw_lines_through_cells_in_excel.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/drhdjaT/loopnet_newark_nj.pdfIn PDF document text
    • https://site-1171686.mozfiles.com/files/1171686/free_fire_images_hd_download_dj_alok.pdfIn PDF document text
    • https://cdn.sqhk.co/kedilexele/gbgh087/ranking_de_dividas_futebol_brasileiro.pdfIn PDF document text
    • https://site-1168325.mozfiles.com/files/1168325/lijuwogazemojagizebuza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/ecb_coach_session_planner_template.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_off0000d7d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D9 5780 bytes
SHA-256: f64d543209f989172c8768468098df27ed1739d4e7cd39835ceb6ea3a5c5a904
font_01_sfnt_off0000eb74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB74 11148 bytes
SHA-256: 31693c3eddd540eba7e2c8678a0972806e629bd1db78f9ac73d54a368c87615e