Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf698820aa282f92…

MALICIOUS

PDF

47.6 KB Created: 2020-08-30 16:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70ee55eb0832ccdf23406df5c193850f SHA-1: e10dad71372f6c35085bc0b1c8eeec51fc0b3393 SHA-256: cf698820aa282f924dbe9eeac025136b8a3a18c786eda498006a6ca9d0e5f6ce
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.ru/wix?keyword=bruce+davison+movies+and+tv+shows', suggesting a lure to a malicious site. The presence of a link farm heuristic further indicates an attempt to distribute malicious links.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=bruce+davison+movies+and+tv+shows
    • https://static.usrfiles.com/ugd/ac72e0_57934002344249e09ddf1298277a25dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_47e9a429be1e4763a90f3b4f09320ff2.pdf
    • https://static.usrfiles.com/ugd/b8c837_788ddd614c0f456ebacbb561db77c414.pdf
    • https://static.usrfiles.com/ugd/173616_6c53bd86661d4bb3a96820af0d5bdc67.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3391c58d3824ca2a5caa1550c77f3e3.pdf
    • https://static.usrfiles.com/ugd/ea2f88_c8f6d9136413464ca2ead067ebafed3d.pdf
    • https://static.usrfiles.com/ugd/6a22cb_a9a2a0b064bd493da247ba69beb10655.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd5ef37642bc4873ac13c8510e4a1d63.pdf
    • https://cdn.shopify.com/s/files/1/0435/9215/5295/files/enga_karuppasamy_songs_lyrics_in_tam.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/dixelubamumimivojorufal.pdf
    • https://static.usrfiles.com/ugd/b8c837_2514bf244c0642bd965e8c4b80d22643.pdf
    • https://static.usrfiles.com/ugd/b8c837_6a08c401915e4bd18991ef63afac1668.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5d5f1db93b345bcac292f10af032b67.pdf
    • https://static.usrfiles.com/ugd/c8a981_3709cc71904647d9ae1c58082ebe6190.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_off00007d0f.bin
c1bd6c7c886a4b513f9638993bb2cc9350306b3af34c4ee964aab57e584cfed1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0F 5348 bytes
font_01_sfnt_off00008f24.bin
de100a2866780c97bcc60175b5de51d05fa680ac1a36ecf675e1fbf2c9758608		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F24 10024 bytes

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