Malicious PDF — malware analysis report

Static analysis result for SHA-256 a13109a88a457f0b…

MALICIOUS

PDF

68.3 KB Created: 2020-11-17 22:49:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 2ac88f63230e187cfe696fde1b259493 SHA-1: 1e4a4420e82312a03fb6f448ce576b783407ac83 SHA-256: a13109a88a457f0b66a7c56bca2cf0dd46a8e7860faa1572245c7b3579f6d7fe
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it redirects to known malicious infrastructure. The embedded URL 'https://traffine.ru/strik?utm_term=sarah+brightman+torrent' is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious, supporting its use in phishing or malware distribution campaigns.

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
  • 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://traffine.ru/strik?utm_term=sarah+brightman+torrent In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379856/normal_5f97847225684.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/dakebesuvum/42910108256.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/fodimofevafowabiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c3599af-17e6-43c2-9b67-67338b78f724/wing_t_offense_playbook.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/89630306438.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/dogigivi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa4ca820-9f59-49b7-96af-04fce9df6c5b/60342124894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31823211-46a7-40d2-84fc-79b39510a321/divinity_original_sin_2_pheonix_heart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f754dbd-7b2e-4943-8ef8-298d0d19f6e7/one_point_perspective_room_step_by_step.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd37c6ce-d664-4099-b062-975118e3e0a8/lalanitezolavuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6315ad17-3564-4799-addd-9c105db712fe/37942066193.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92c812e8-11c6-4e2b-a17c-572519270d1c/nofipezaxudomonu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16965fd7-dfd4-4667-a0f6-6690cd9a3c0d/mefawoxonetiwavanez.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_off0000cc5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC5C 5132 bytes
SHA-256: 9beca20b181be1c59cc6887dc8c463b24bb8ea577337ccd11a50233b6c83a33b
font_01_sfnt_off0000dda9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA9 12196 bytes
SHA-256: fdfd6f0880dcb102de54296d137a1ce7a0e8b4b614f3a94aed2a76ebb0cb02af

Open this report in the interactive analyzer, or submit your own file for analysis.