Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4ed7e4b5c76cda0…

MALICIOUS

PDF

42.1 KB Created: 2020-08-02 03:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ac309bd3a48c06426bbb00d02e36551 SHA-1: 78b64ad525324348f9d2126d3bc1a8930f036496 SHA-256: e4ed7e4b5c76cda01765f7b8aa8b13925d0c8b6b45c0f4a9c6bafa7b1d7c1b23
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits a PDF SEO link farm, with numerous links to other PDFs hosted on Shopify. The document body, though heavily obfuscated, contains the 'adventure time reddit' keyword and the malicious URL, suggesting a lure to potentially malicious content.

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/pify?keyword=adventure+time+reddit
    • http://files.guyingram.com/uploads/1/3/2/6/132681596/3295852.pdf
    • http://files.ohioheartgroup.com/uploads/1/3/0/7/130739493/zalaw.pdf
    • http://files.alexstudio.bg/uploads/1/3/1/1/131164448/875fbb5e4c12d5.pdf
    • http://files.martialhartamas.com/uploads/1/3/0/8/130814279/6186ec0be38b.pdf
    • https://cdn.shopify.com/s/files/1/0437/2211/3192/files/92438228863.pdf
    • https://cdn.shopify.com/s/files/1/0434/5049/9222/files/xizowozerisasebidege.pdf
    • https://cdn.shopify.com/s/files/1/0434/0128/1701/files/zakavipaza.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/95957658391.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/nowilulujela.pdf
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/25948694062.pdf
    • https://cdn.shopify.com/s/files/1/0438/8916/4440/files/batesajotufujanow.pdf
    • https://cdn.shopify.com/s/files/1/0437/7201/8845/files/elmos_got_the_moves.pdf
    • https://cdn.shopify.com/s/files/1/0434/7287/9782/files/live-_server_command_not_found.pdf
    • https://cdn.shopify.com/s/files/1/0435/6174/6595/files/60700398388.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/92636347463.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_off00006795.bin
504f01c03232d78229aaf4a46be49676b1bed135f59c637825a0eb5500032354		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6795 4600 bytes
font_01_sfnt_off00007728.bin
a2ad145eeb2ced2508211a0b4aad84b31ce54d4cc30ecb97570602e52e6c39cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7728 10744 bytes

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