Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf652baa0549ab3…

MALICIOUS

PDF

33.8 KB Created: 2020-08-01 21:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46ccbba3d33cf8398ef88ba6b4fd8bee SHA-1: 0634bd23a2ed378c0920e3e3bcacfec99490ef5e SHA-256: 1cf652baa0549ab3f382f5457364bcc519669718f2e13c8db5d376cd1aa20b82
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=2007+dodge+caliber+owner%2527+s+manual'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure under the guise of providing a vehicle manual.

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=2007+dodge+caliber+owner%2527+s+manual
    • http://files.tastytemptationsllc.com/uploads/1/3/2/6/132680994/1304423.pdf
    • http://files.blackcowltd.com/uploads/1/3/1/4/131453267/5358489.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rosetotirumeza.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.pdf
    • https://cdn.shopify.com/s/files/1/0432/0765/5579/files/25927948782.pdf
    • https://cdn.shopify.com/s/files/1/0428/7909/0855/files/84408473420.pdf
    • http://files.lkois.people.ua.edu/uploads/1/3/2/8/132814900/melajegaro.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/jetadizexawokutewofomuxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/5939/6254/files/19285848956.pdf
    • https://cdn.shopify.com/s/files/1/0433/3872/7589/files/vuwuxefi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2249/1541/files/dmv_license_renewal_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pedarivorenali.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/57361489543.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/70215346135.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32296476761.pdf
    • https://cdn.shopify.com/s/files/1/0429/0769/7305/files/16143643216.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_off0000470f.bin
0532fa41008b06047c580d5de92bd359197934407b160f826e4351e63f5e58ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x470F 5784 bytes
font_01_sfnt_off00005ac0.bin
57276f59e150cdc8dc2adafe51ff8798d8a5c823b7317f896c3ef0714f9bad84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC0 9264 bytes

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