Malicious PDF — malware analysis report

Static analysis result for SHA-256 8be0bead79247e1c…

MALICIOUS

PDF

66.4 KB Created: 2020-08-01 13:51:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64712d799638b6179e7860e83f74bf97 SHA-1: e1d9b69c708ed467832cd9786b4374a3c77e0216 SHA-256: 8be0bead79247e1c9396311fb28ce76e125acb6ed863931dfc82c94233a6661b
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 'https://ttraff.com/pify?keyword=git+diff+file'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0433/8856/7706/files/ti._paper_trail_torrent.pdf'. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to redirect the user 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.com/pify?keyword=git+diff+file
    • http://files.louisvillehealth.org/uploads/1/3/1/4/131483685/da8871ca6b1c0.pdf
    • http://files.johnmac13.com/uploads/1/3/1/8/131871499/4159539.pdf
    • http://files.niliglass.com/uploads/1/3/1/8/131871462/3760250.pdf
    • https://cdn.shopify.com/s/files/1/0433/8856/7706/files/ti._paper_trail_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0438/0708/0610/files/13590337447.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2383/files/noporolomemogalojeputin.pdf
    • https://cdn.shopify.com/s/files/1/0433/9751/3381/files/nusep.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/44145857377.pdf
    • https://cdn.shopify.com/s/files/1/0431/6974/2999/files/25661986223.pdf
    • https://cdn.shopify.com/s/files/1/0432/1047/3633/files/30123640340.pdf
    • https://cdn.shopify.com/s/files/1/0434/0419/8044/files/45348329979.pdf
    • https://cdn.shopify.com/s/files/1/0432/7273/2836/files/8956128254.pdf
    • https://cdn.shopify.com/s/files/1/0428/7699/3695/files/67523991080.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/kakuxow.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_off0000bd31.bin
59b7a0aeeb059f172531e5ce5cfe0ebced07e8ab1d6cdcdec061f36201d58bea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD31 4448 bytes
font_01_sfnt_off0000cc6c.bin
92fd224d123b228fbdfaab770d3bfa24fe3393ff1f1dce77abd799c5a4c6af30		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6C 15180 bytes

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