Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6659ccfd714bed…

MALICIOUS

PDF

85.0 KB Created: 2020-12-29 16:26:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2d4033672b120032c4944f01226cdbdf SHA-1: 3a89b0a3c39417ef58c5be917bd38e23b243d707 SHA-256: 9e6659ccfd714bed7aa4c93a1dab282a983647bebc65163489bff015f2bccb40
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing attempt. The embedded URL is obfuscated within the document's content, disguised as a search query for 'Best 80s music artists'. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://cctraff.ru/strik?utm_term=best+80s+music+artists In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377380/normal_5fa8ba57a289d.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/jghhaUA/lutogolozi.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/39df86e1-7dee-48ae-bb13-bfafb242f12a/blade_runner_white_dragon_cut_download.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/pharmacy_dispensing_error_report_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61804b73-b61e-41c1-84d4-2173e4becb5f/83307491444.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32d9b157-fc6b-4f89-b096-9868622dccb8/davamaluxekivoki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/554c3f6c-8f4e-40a3-967b-083686c86d78/landlord_mod_apk_2.6.3.pdfIn PDF document text
    • https://s3.amazonaws.com/remoxi/ancient_rome_map_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/easy_definition_of_capital_formation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53e5ac44-bcc1-4c3d-a407-a4ff2c8e012e/minekuwibexaxetumud.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_off00011064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11064 5296 bytes
SHA-256: fa00319175547e6c52fd42f447b9cd229930b724032bcd0dce4542e743d6563c
font_01_sfnt_off0001224b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1224B 11024 bytes
SHA-256: 0a46ec5c701d3685c7e3d8e3ab1c543db2907d7725a885b9c89f5fe8482b8ae6