Malicious PDF — malware analysis report

Static analysis result for SHA-256 3650a8ae44272e67…

MALICIOUS

PDF

72.0 KB Created: 2020-11-13 23:53:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 086176af6b410ffcb366e47c5fab70f2 SHA-1: 77290014b71217e9d6b6efb743a859a612df70b5 SHA-256: 3650a8ae44272e6785622d3edbe9150e5e4a6c3caa91081665428768026efc2d
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'https://gettraff.ru/123?utm_term=flow+training+answers+health+and+safety'. This indicates the document's primary purpose is to lure the user to this external site. The ML classifier and ClamAV also flagged this PDF as malicious, reinforcing the phishing or malware distribution intent.

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://gettraff.ru/123?utm_term=flow+training+answers+health+and+safety In PDF document text
    • https://cdn-cms.f-static.net/uploads/4493888/normal_5fac3b7f9dc11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385410/normal_5f90d7d4ac9ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408721/normal_5fa21ca24e1b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447089/normal_5fa2005227b01.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/750b63f2-8225-4e72-af5d-38dce408f5f1/33891127478.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/56331546675.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69dbec9e-1b3c-4e50-bbc5-d684c0de95bf/17474451050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0256b583-1d08-4b8c-980a-20200656a9b0/41612883223.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1006218a-e843-4f57-a5ba-dbb5c3e568a4/13271562092.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f3146d5-535d-4aa4-9fc8-cb797c9850d9/76552410011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/242ae1b3-1f4d-4302-8972-8f060ac4f07f/43639823169.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/jejamerinuponovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0a57d40-123a-42f3-9dfe-71e96f39732c/94299342127.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/982c27a9-e9e6-4419-91d5-c3dd7427890e/statistics_regression_problems.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD131 5108 bytes
SHA-256: 25f791175885e0d4bc6e68128b4118c0ae75a1d203bbbe22ae06e9965defb6bb
font_01_sfnt_off0000e295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE295 10012 bytes
SHA-256: 17248bc9a0e5b27fbd395d5969e7a12729cca461a1184fc363ecf771d3569971
font_02_sfnt_off000104f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F5 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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