Malicious PDF — malware analysis report

Static analysis result for SHA-256 4004c4d9647d3e7a…

MALICIOUS

PDF

40.6 KB Created: 2020-08-08 20:16:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41ffaa2d78892c1d2be66ae75540cfcf SHA-1: 8ea044493f460db83be4a16848c2e8e894f0a989 SHA-256: 4004c4d9647d3e7a0d350db2bd9b11c20b9a40e3d930113b91e06b2f1bcd4530
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, directing users to 'https://ttraff.cc/wb?keyword=western%20blot%20test%20procedure%20pdf'. This indicates a phishing or social engineering attempt. The document also contains a large number of embedded links to other PDFs, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of the malicious URL is the primary 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.cc/wb?keyword=western%20blot%20test%20procedure%20pdf
    • http://files.southeasthighlands.com/uploads/1/3/2/8/132814544/maromagegovepa-zifaxivusonep.pdf
    • http://files.poppyavenuecleanbeautybar.com/uploads/1/3/1/4/131438641/3904170.pdf
    • http://kuwup.folrac.com/uploads/1/3/1/4/131453215/nasuxokexada-jofaduj-gegupafipoge-dobeg.pdf
    • http://files.watkinsdancecompany.com/uploads/1/3/0/7/130739174/f17cc55e4dd.pdf
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/2017_lexus_gx_460_redesign.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6867/files/lubovibotokane.pdf
    • https://cdn.shopify.com/s/files/1/0432/0067/6003/files/gakojirukekol.pdf
    • https://cdn.shopify.com/s/files/1/0444/0604/6886/files/limitations_of_bureaucratic_theory.pdf
    • https://cdn.shopify.com/s/files/1/0429/8883/0873/files/salient_features_of_metaphysical_poetry.pdf
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/motelufodaterodotiwi.pdf
    • https://cdn.shopify.com/s/files/1/0436/7410/8057/files/59261250885.pdf
    • https://cdn.shopify.com/s/files/1/0434/6609/6806/files/1698775363.pdf
    • https://cdn.shopify.com/s/files/1/0431/0653/3527/files/wuvuwuwu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/wexasopafe.pdf
    • https://cdn.shopify.com/s/files/1/0430/4837/0333/files/naxujus.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_off000062a2.bin
8c529e8f6124fb6037ec81f3c278e73bf10879efc75b80c941fae354049efb5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A2 5092 bytes
font_01_sfnt_off0000740e.bin
00cf0f814209e32e3d9392da88c88e7fc17e22851ce2d8da87ef20a0d3037817		 pdf-font-stream PDF embedded font (sfnt) at offset 0x740E 9804 bytes

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