Malicious PDF — malware analysis report

Static analysis result for SHA-256 25987f379613a950…

MALICIOUS

PDF

43.3 KB Created: 2020-10-30 05:35:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5d4f79d96fa88df8175b7d780a82792 SHA-1: 741b7f1d5a1bda750d44c093c2be823c03c91b9b SHA-256: 25987f379613a950ae5f24d7aedb0123aca449a14d8b08fca7bfd80587a72966
94 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://gettraff.ru/aws?keyword=vbd+fantasy+football' is identified as a high-risk indicator. The document body, though heavily obfuscated, contains references to this URL, suggesting an attempt to lure the user to a malicious site, likely for phishing or malware distribution.

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=vbd+fantasy+football
    • https://cdn-cms.f-static.net/uploads/4366661/normal_5f9154178f4f6.pdf
    • https://rowurasivove.weebly.com/uploads/1/3/4/3/134357219/8350344.pdf
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/nedibezid.pdf
    • https://cdn-cms.f-static.net/uploads/4371807/normal_5f8a90f6550a3.pdf
    • https://cdn-cms.f-static.net/uploads/4374682/normal_5f8dafc6e1ce8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/cb62654a-ce64-4ea6-9ca1-c961000248fc/6061659885.pdf
    • https://s3.amazonaws.com/wilugugo/dekuvuteremuba.pdf
    • https://s3.amazonaws.com/zupenafud/wayne_schools_community_pass.pdf
    • https://s3.amazonaws.com/fotojipifuzitul/keromufarim.pdf
    • https://cdn.shopify.com/s/files/1/0480/0613/5961/files/sony_clock_widgets_apk.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c6d.bin
38fb526300265b9463ede0a0812fc04ef7514e49d60d79110844d9eaab0a41a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6D 5012 bytes
font_01_sfnt_off00007d9b.bin
cffe7e2e88d72dfd8869bb32b0acfefbc09d4e675e10307a0b784831a3a2cd39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9B 10172 bytes

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