Malicious PDF — malware analysis report

Static analysis result for SHA-256 a49c5f6db959b7f7…

MALICIOUS

PDF

144.0 KB Created: 2020-08-14 12:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fda251c987d0f865330f96ab4dd808d SHA-1: 89fed10476a2dda319bbf9b795bf989fccd46837 SHA-256: a49c5f6db959b7f769fab4700309dd058703ed3c7fd0a124a4bf95b9e6cbd9ab
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify, likely to obscure the malicious redirector. No scripts were extracted, but the malicious URL is the main indicator of compromise.

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=10+minute+guided+meditation+for+beginners
    • http://files.customdvs.com/uploads/1/3/0/8/130874485/xeduverefidake.pdf
    • http://files.servinggodgracefully.net/uploads/1/3/0/9/130969543/vagapopus-nokat.pdf
    • http://files.mikesoffice.ca/uploads/1/3/2/6/132682070/3652893.pdf
    • https://cdn.shopify.com/s/files/1/0428/8253/1481/files/60024945986.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5876/files/53515710733.pdf
    • https://cdn.shopify.com/s/files/1/0436/6408/1046/files/16986411894.pdf
    • https://cdn.shopify.com/s/files/1/0436/0133/0339/files/90176343011.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/descriptive_essay_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/osrs_monkey_madness_2.pdf
    • https://cdn.shopify.com/s/files/1/0436/4189/7110/files/finaxenidujotunera.pdf
    • https://cdn.shopify.com/s/files/1/0431/8802/7555/files/54137124300.pdf
    • https://cdn.shopify.com/s/files/1/0430/3503/3757/files/91010688531.pdf
    • https://cdn.shopify.com/s/files/1/0440/5464/2853/files/52506388507.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/72476484203.pdf
    • https://cdn.shopify.com/s/files/1/0431/7977/0019/files/vupelunudugi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e764.bin
550fad41468da10b6f1a5978cb2a3db0a85acf820c619473857dbe53f0d64b31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E764 4332 bytes
font_01_sfnt_off0001f688.bin
94b06ec6555c15613ee33e8da0528fba18454c9df9bdfa382eb6b0bf5cfb1a8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F688 5432 bytes
font_02_sfnt_off000208e3.bin
2e9181449b85b3f6039fc243526f45b87ba60cc1589297d7e481fc573dba1db9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x208E3 12228 bytes

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