Malicious PDF — malware analysis report

Static analysis result for SHA-256 44750656e7597540…

MALICIOUS

PDF

54.5 KB Created: 2020-07-29 21:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8141a51d0aacd1d3ef0b743b7eca62c0 SHA-1: ab9a978fd2ac6471fe6a6ef7d77767f5607a9dfb SHA-256: 44750656e7597540895308ae07a2366c0d025dd4a60ecb042aa80cd4eb53d376
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is disguised as a free download for a PDF. The document body, though heavily obfuscated, appears to contain metadata related to the 'The bezels of wisdom pdf free download' lure. The presence of numerous external links, many pointing to Shopify domains, suggests a link farm or SEO manipulation tactic to increase visibility for malicious content.

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/pify?keyword=the+bezels+of+wisdom+pdf+free+download
    • http://files.jansceramic.com/uploads/1/3/1/3/131380008/3552224.pdf
    • http://files.edcentricteaching.com/uploads/1/3/1/4/131453021/doletafapu-taxowutoboge.pdf
    • http://files.lifeinthetumbleweeds.com/uploads/1/3/1/6/131637562/d10108.pdf
    • https://cdn.shopify.com/s/files/1/0430/0416/6297/files/dubavewidukalifi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/wodowizuwukudi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/tilusopatawafetazu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/81159380938.pdf
    • https://cdn.shopify.com/s/files/1/0434/8664/2338/files/93161817241.pdf
    • https://cdn.shopify.com/s/files/1/0432/8439/8236/files/vujamesokonu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9910/3136/files/nanorejulanifigopef.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61047377128.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/17272779067.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/27856270528.pdf
    • https://cdn.shopify.com/s/files/1/0437/7670/4669/files/pujulinuwunazat.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/33056188295.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/
    • https://cdn.shopify.com/s/files/1/0434/8664/2338/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009838.bin
17b5e56028159644a453860ffab22be78b138a160d5696a189540d1f924af082		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9838 5220 bytes
font_01_sfnt_off0000a9d2.bin
13a24a9c80d443f20a95bc6edcbc5b6c0d9b3c56172e1c5bf8070491feb9d3a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9D2 10352 bytes

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