Malicious PDF — malware analysis report

Static analysis result for SHA-256 2595bd10cd3c07ad…

MALICIOUS

PDF

36.0 KB Created: 2020-08-09 16:49:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b10de1cc5a939841f2b80b1edaeeb3e SHA-1: 1f7d5fcc05370f7b5feccef7003c58597f1714b3 SHA-256: 2595bd10cd3c07ad488da6dd60516477a141bdea80dd092c743b312ae44621aa
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com). This suggests a link farm or redirection attack designed to obscure the ultimate destination. The document body, though heavily obfuscated, contains the URL that triggered the redirector, indicating the primary attack vector is user interaction with these links. No scripts were extracted, and the PDF structure itself does not indicate exploitation, but rather social engineering via link redirection.

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=bioplasticos+en+mexico+pdf
    • http://files.sekimitsuscholars.com/uploads/1/3/0/7/130775126/89875d4eecc16.pdf
    • http://files.mollymarrinbasketball.com/uploads/1/3/0/9/130969440/solewizuzojorozar.pdf
    • http://files.centrepointecincinnati.com/uploads/1/3/1/4/131406413/e08b8.pdf
    • http://files.fbckilbourne.com/uploads/1/3/2/6/132695280/vapuwasunejobonok.pdf
    • https://cdn.shopify.com/s/files/1/0431/1613/4562/files/8979582020.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/10993120265.pdf
    • https://cdn.shopify.com/s/files/1/0434/2690/6264/files/60393774770.pdf
    • https://cdn.shopify.com/s/files/1/0439/3703/8491/files/download_test_file_10gb.pdf
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/dutawiwunalisemabojujer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/runuwadobona.pdf
    • https://cdn.shopify.com/s/files/1/0439/9765/9294/files/cisco_cyber_ops_210_250.pdf
    • https://cdn.shopify.com/s/files/1/0431/5319/5162/files/jiridevig.pdf
    • https://cdn.shopify.com/s/files/1/0436/2951/0814/files/harvard_referencing_style_ukzn.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/ecotourism_in_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/68253674722.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_off0000500b.bin
c53d48de23c445cc09d86090661287be225d50e91aee4f4b3f5f2ff949826bf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x500B 5320 bytes
font_01_sfnt_off00006220.bin
3b5692bb95f6e1f75be97b1e13ae952b1d33b445dac23d79197bfe22d7732028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6220 9696 bytes

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