Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5cfd2992f9e0879…

MALICIOUS

PDF

42.1 KB Created: 2020-08-21 15:50:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80f54face1f6a95db9266c2dbe75c6b1 SHA-1: c478744cae618e6c8d9a158c7d95d3ef1780bffd SHA-256: e5cfd2992f9e0879de197f574ab99550121b19c0006a4eec355758a6031512f9
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to 'assistive devices program mobility manual'. The PDF also exhibits characteristics of a link farm, embedding numerous external links, many of which are hosted on Shopify but point to potentially malicious content. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploits.

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.ru/pify?keyword=assistive+devices+program+mobility+manual
    • http://files.monicaburtonyoga.com/uploads/1/3/0/8/130874102/puxejizir-deruko-vipelomajas-wasuzetit.pdf
    • http://nakililof.nicbrijendanconsulting.com/uploads/1/3/0/8/130813988/retidakisiluzol_papizefaluno_nixewiwo.pdf
    • http://durow.riveflowyoga.com/uploads/1/3/1/4/131454950/buzifusalatapos-zeliwirabejepe-fepemaletotedet-gupozitoxuwep.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/pathala_bhairavi_old_tamil_movie.pdf
    • https://cdn.shopify.com/s/files/1/0437/9613/6098/files/42343761309.pdf
    • https://cdn.shopify.com/s/files/1/0431/6141/9927/files/electrician_work_experience_certificate_format.pdf
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/kobaxujadopaximo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0693/4688/files/nubonafatojojavexuman.pdf
    • https://cdn.shopify.com/s/files/1/0452/3137/4493/files/binary_tree_algorithms.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nezaneseku.pdf
    • https://cdn.shopify.com/s/files/1/0435/0948/1624/files/duxubivoso.pdf
    • https://cdn.shopify.com/s/files/1/0440/3652/2149/files/76143653114.pdf
    • https://cdn.shopify.com/s/files/1/0431/0591/0933/files/wasawumalizokapitomubar.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_off00006278.bin
0f7fa008bfe9a3d4b11e4bb5a0456ce3dd58cba0990763c16e419cbf70e9d0da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6278 5684 bytes
font_01_sfnt_off000075bc.bin
5427e8e14fbac14987284e8ab8f7865329cf5872310bc5ee15804cbc952c53f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75BC 10636 bytes

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