Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cd6bfc6868e7fa9…

MALICIOUS

PDF

39.7 KB Created: 2020-08-29 14:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43de4737a912446d7ed92a849bace19f SHA-1: 64db7ba0ff6ad2b3b8897810ad23bb71b9ff2449 SHA-256: 9cd6bfc6868e7fa9a7845220afeeb0b30e9a15995f1bc9d9b5bd6092bd382d7d
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=songbook+with+chords'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary intent is to redirect the user to a malicious site, likely for phishing or malware distribution.

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.com/wix?keyword=songbook+with+chords
    • https://cdn.shopify.com/s/files/1/0434/0717/9941/files/rofefetagujutarubelewulu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/14070602009.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4621/files/fejalepalepi.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/roxaxulutipafuroranetumat.pdf
    • https://static.usrfiles.com/ugd/b8c837_0dcf7ec2b9304b93a502b2df4ea6278d.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a6ee4b485994e83a8f61d18f6b92ae3.pdf
    • https://static.usrfiles.com/ugd/b8c837_a181f8b601a3464ba56d0a95cf35dc29.pdf
    • https://static.usrfiles.com/ugd/b8c837_87490ce62a814db78ec795df52689f3d.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ad8430f36ad4a33a843615bf3a0bdac.pdf
    • https://static.usrfiles.com/ugd/b8c837_48f1ac0621084e2fa3e0a556ab16f75d.pdf
    • https://cdn.shopify.com/s/files/1/0431/3268/2397/files/87551739545.pdf
    • https://cdn.shopify.com/s/files/1/0431/9503/9905/files/broken_angel_english_movie_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/5122/1146/files/65944686076.pdf
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/22662637905.pdf
    • https://cdn.shopify.com/s/files/1/0438/9234/2939/files/nuwave_pro_infrared_oven_manual.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_off00005bc9.bin
2673a6090d8d8abf84530bd678cc8ab53a071d9d7577f23d7351b283833fb729		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC9 5356 bytes
font_01_sfnt_off00006e04.bin
7c677fcefb5a2998e3634623df49ab58bd29af5a4c7a1c359399ba16c53450f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E04 10816 bytes

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