Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f1b8f41ed74504…

MALICIOUS

PDF

42.1 KB Created: 2020-08-17 11:57:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d8cd51f338c6d47b365a9d7b42385c9 SHA-1: 4e1a2c7970fe3c206ebff76b00747b07a9bc626f SHA-256: 96f1b8f41ed74504bc77c282db8aa3e74845bd7e79a608db7f8e97694154b597
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/pify?keyword=chromatic+harmonica+beginners+guide', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to a malicious site. The primary attack pattern involves redirecting users through this chain to a potentially harmful destination.

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=chromatic+harmonica+beginners+guide
    • http://narefi.stjohnlutheransherburn.org/uploads/1/3/1/0/131071164/a84a0f.pdf
    • http://venezad.mindgility.co/uploads/1/3/2/7/132712615/ronideporutabi_xexasopumiwox_powuniva.pdf
    • http://vuterop.beyondlagartococha.com/uploads/1/3/1/4/131410685/5530619.pdf
    • https://cdn.shopify.com/s/files/1/0434/3549/1490/files/spam_folder_gmail.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71061356311.pdf
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/cctv_footage_video.pdf
    • https://cdn.shopify.com/s/files/1/0430/5960/9753/files/duwoloduvose.pdf
    • https://cdn.shopify.com/s/files/1/0440/9671/6952/files/72377247863.pdf
    • https://cdn.shopify.com/s/files/1/0438/8706/7291/files/rafenafewatiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/beyond_diet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/98697495037.pdf
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/jeposibekijo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/39007049786.pdf
    • https://cdn.shopify.com/s/files/1/0438/8611/7019/files/66567292314.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_off000064d2.bin
cd2fb38d5d712c34a8c80da503789526b748e49792e18e8d21f176b3f41f56bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D2 5368 bytes
font_01_sfnt_off000076e2.bin
bb0d043a04ff067bcfe637143fd40ba41d15aeb6f16cfd500ea7dc7f0baefb3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E2 10768 bytes

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