Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3bf1e0b6adf2e55…

MALICIOUS

PDF

36.7 KB Created: 2020-11-05 17:11:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 503d897e733bcc65019789830c9a7d41 SHA-1: b97c696e2e8e6b39bc2c4062c2b6e63cdbea48c1 SHA-256: d3bf1e0b6adf2e55e23955e386cdcc0ad009e5724ac488d838ccf773301d30f1
94 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?keyword=raze+unblocked+76'. The document body also contains this URL, suggesting it is intended to trick the user into clicking it. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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/aws?keyword=raze+unblocked+76 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367304/normal_5f87667a5dcf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403681/normal_5f983ae191ba3.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/timafatafej/44425466994.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/10316764800.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/15645496179.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/antimetabolites_drugs.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/firodedajinonuwexevit.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/panathenaic_procession_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/orbit_6_station_manual_57896.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/438925d6-36f1-45b9-9771-04bab4f2802e/tabard_of_flame_ebay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de336f36-6f15-4524-a55f-3f7271f53414/84467473755.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/xomitubumelinat.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_off00005274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5274 5152 bytes
SHA-256: 12b866079b9c0b6daf3571d934901f6c9f732447599fe22ff65b42dcabdd7004
font_01_sfnt_off00006425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6425 10068 bytes
SHA-256: 3fa7bd96131b21b9c0e5ec5c621fd98d614e604fb653060af6661efc6f5495a4

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