Malicious PDF — malware analysis report

Static analysis result for SHA-256 1126c5a712899ab7…

MALICIOUS

PDF

56.3 KB Created: 2020-10-29 15:47:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2963e81dd28e39d1689227eac689d8cf SHA-1: a458420fdacbc8992c2a8a23c876f91966419be1 SHA-256: 1126c5a712899ab7fb886c7b38b7e546b164b49096229db6eceeaa4835ddfddb
92 Risk Score

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/strik?keyword=action+figure+price+guide+2015'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

Heuristics 2

  • 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.
  • 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/strik?keyword=action+figure+price+guide+2015
    • https://gebigimudixerez.weebly.com/uploads/1/3/4/3/134374499/985685.pdf
    • https://cdn-cms.f-static.net/uploads/4376372/normal_5f9ab97434446.pdf
    • https://cdn-cms.f-static.net/uploads/4420031/normal_5f96c3b146d95.pdf
    • https://cdn-cms.f-static.net/uploads/4377115/normal_5f992af42cd7c.pdf
    • https://cdn-cms.f-static.net/uploads/4369916/normal_5f884ce2ebb85.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c16cee35-f40b-4793-9f6a-f95fad7c895b/kifitokexe.pdf
    • https://cdn.shopify.com/s/files/1/0503/4082/3203/files/jivimu.pdf
    • https://uploads.strikinglycdn.com/files/1b6acf41-6eee-4108-8923-0750c52028fb/kelutovuzoboluxod.pdf
    • https://cdn.shopify.com/s/files/1/0500/0328/0027/files/split_string_by_space_android.pdf
    • https://cdn.shopify.com/s/files/1/0476/6262/9030/files/60175724396.pdf
    • https://uploads.strikinglycdn.com/files/ac7ffcfb-2913-4e3d-a257-9768fa75dbd3/80645263802.pdf
    • https://uploads.strikinglycdn.com/files/83240412-1db6-4469-9b34-ff88abb88179/78327971489.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off0000cfa5.bin
7ba9c9b1ddcd126869af2cb35d8a8b3b6de99c21a08da6e4cacfc5cdb6e44382		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xCFA5 7212 bytes
font_00_sfnt_off000097e5.bin
efee1dcea168c0e8e650ddaf9bb4315ff2f3cd65aa0a1a3ab8400e77e7aa36d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97E5 5344 bytes
font_01_sfnt_off0000aa3b.bin
70fe3ced473b23779060b6da7835620dc81ce765085c10e2f89f661140885a29		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA3B 10920 bytes

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