Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e3dd5c8d41b4052…

MALICIOUS

PDF

72.2 KB Created: 2020-12-25 04:26:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: deba8fd6c07b1e16a52d9ac1c449f702 SHA-1: 2bb8fde18aee7e6391a5451ef5e52b17fd0e0dc3 SHA-256: 7e3dd5c8d41b4052b48060065e4b3b02313163dae9f56e5e589aaaf8c789b080
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. ML classification and ClamAV also flagged the file as malicious. The embedded URL is likely used to lure the user to a phishing site or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/strik?utm_term=best+fruit+cutting+tools In PDF document text
    • https://cdn-cms.f-static.net/uploads/4450347/normal_5fa2751a06c70.pdfIn PDF document text
    • https://cdn.sqhk.co/wogigixa/LiaZhjK/football_soccer_league_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/podadoxafa/gjSxChf/sudoku_printable_template.pdfIn PDF document text
    • https://cdn.sqhk.co/godivago/hjt9hbL/dynasty_heroes_legend_of_samkok_codes_september_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464077/normal_5fdac0d92a2d5.pdfIn PDF document text
    • https://cdn.sqhk.co/dutebevon/bjhjgfr/5693025129.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6945a95b-4449-4555-b92a-8dc43e5fa3cb/adresse_resiliation_bpce_assurances_caisse_depargne.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1afabcae-91ac-453e-83f7-1fb6ce82acb7/noxinanajapesatefipozu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce4a78b4-bb65-46ce-b085-d77acfff0c28/80775680967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0156c22-815d-4599-b0f6-8bb6261f2fb7/calendar_2020_december.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5271c906-aaff-4ffc-9ef5-6b113be30be3/pitasenutakugazigofe.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_off0000dcb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB1 4888 bytes
SHA-256: 2b7e7c1a3a01cab99a9cfc64a9f47090729779cdac0b4fe1a615c88dda98dab5
font_01_sfnt_off0000ed6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6F 11608 bytes
SHA-256: fbe1e72679255f31804e21276e375f83657c8ad769a7d510f1fbbbe01d589ca9