Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9f3371f547edec4…

MALICIOUS

PDF

50.0 KB Created: 2020-08-18 21:16:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7428a31880fd073f54cb7c4320242472 SHA-1: 71c65c3fca9024c99c658fb4e072675cd9cd252d SHA-256: f9f3371f547edec475a955651bf6eb7019ffbf0a00ff13693f0f06096b8f472c
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 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Yajamana kannada audio songs free' and the URL itself, suggesting a lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely to obscure the malicious redirector. No scripts were extracted, but the primary malicious activity appears to be the redirection to the 'ttraff.com' URL.

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=yajamana+kannada+audio+songs+free
    • http://files.lishammons.com/uploads/1/3/1/3/131381369/fitofozuxuzovabi.pdf
    • http://files.crps247.com/uploads/1/3/0/7/130776338/jowonevogenexu-vexanib.pdf
    • https://cdn.shopify.com/s/files/1/0433/5563/5871/files/trx_suspension_training_course_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/bifazerekabilasolo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7133/1742/files/33112398705.pdf
    • https://cdn.shopify.com/s/files/1/0437/1510/0826/files/55690994869.pdf
    • https://cdn.shopify.com/s/files/1/0434/5197/3799/files/asset_management_framework.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31082235151.pdf
    • https://cdn.shopify.com/s/files/1/0435/9861/0589/files/dekusipinokovofelegi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/sakemofafojupijepujotiwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/lafuruza.pdf
    • https://cdn.shopify.com/s/files/1/0431/8022/8757/files/wutad.pdf
    • https://cdn.shopify.com/s/files/1/0436/7079/8489/files/52871629891.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/mov_to_mp3_converter.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_off00007fa5.bin
5c519d482948cb81c1f5d635e6926a6ad56be8d7d039a6d4f0ed793f2806c102		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA5 5296 bytes
font_01_sfnt_off00009195.bin
2ed11b26ed0a2efb6d44392a38575de69b43f9729bae352b9a4a8f835a07e579		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9195 13160 bytes

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