Malicious PDF — malware analysis report

Static analysis result for SHA-256 9df3daff3250b9b0…

MALICIOUS

PDF

41.2 KB Created: 2020-08-24 11:19:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02f20e9febbc4cbef140d09892353615 SHA-1: e8c1d0394026fe7c467bc71d96d593fd570f50fb SHA-256: 9df3daff3250b9b09653828a66936322ff1a19e178218325125747a99d36adab
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The ML classifier also strongly flagged this file as malicious. The embedded URL, https://ttraff.ru/pify?keyword=aggiornamento+android+auto+tucson, is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ttraff.ru/pify?keyword=aggiornamento+android+auto+tucson
    • http://files.brownsshoesgj.com/uploads/1/3/0/7/130775171/lekebozalimo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3452/6375/files/xapejimaninafanasuluti.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/3419529886.pdf
    • https://cdn.shopify.com/s/files/1/0431/6430/3522/files/posediligogoboraxixuza.pdf
    • https://cdn.shopify.com/s/files/1/0437/2122/8442/files/dudigitatewogoremefi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fixasitisajixumazurezeve.pdf
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/windows_command_prompt_cheat_sheet.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006375.bin
d7e09d98fd1d8528c6b6b9127448255ee37800f9a919f28e9ddf594f71756971		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6375 5216 bytes
font_01_sfnt_off00007511.bin
770b3becf6c59634db2faf7ebea71dfbd9ab979830bc2ecb2876c7409bf7973b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7511 10952 bytes

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