Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf805500c25854c…

MALICIOUS

PDF

32.3 KB Created: 2020-08-29 10:16:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 666229994a5b4ae2ed9ce19923a91d6d SHA-1: 165918d9987ad33bb7a0f18d8a6eb2a3b16ee896 SHA-256: ccf805500c25854cb2ad0fd7773b6aaede2f1e29c3099dd7211b36d6815a9970
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, a common tactic for SEO spam and phishing. One critical heuristic identified a link to a known malicious redirector, ttraff.club, which is used to lure victims with search terms like 'itil foundation handbook pdf'. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure. The file is identified as malicious due to this redirection to malicious infrastructure.

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.club/wix?keyword=itil+foundation+handbook+pdf
    • https://static.usrfiles.com/ugd/b8c837_24f7d0fef4b5417e9c7205c9f62d74ad.pdf
    • https://static.usrfiles.com/ugd/b8c837_de8101c28447443aa733ff3c6c638ccb.pdf
    • https://static.usrfiles.com/ugd/b8c837_b50cd9a777fe42f19c748b10e8681b3b.pdf
    • https://static.usrfiles.com/ugd/b8c837_d411eca74660407d873d09231a012fef.pdf
    • https://static.usrfiles.com/ugd/b8c837_de82ef8dd8774e5a86d629f3711181a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_63f5b5e8bde64ac286054fa631610ed4.pdf
    • https://cdn.shopify.com/s/files/1/0431/4726/4166/files/kezobuzud.pdf
    • https://cdn.shopify.com/s/files/1/0436/9822/5320/files/varipikufel.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8695/files/celtx_script_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/2296/5160/files/clasificacion_de_atresia_intestinal.pdf
    • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/descendentes_1_filme_completo_dublado.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_off00004331.bin
31dd2bf05bf8e943c3ffc4d4431dd144fab7d677b2f67aef786ea903939fa2a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4331 4996 bytes
font_01_sfnt_off00005422.bin
574c592ef8ba2427d99f6e6a5076fa8eeee5baf2045c609dbb61bc867039fbee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5422 9636 bytes

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