Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ec49ab0069e125f…

MALICIOUS

PDF

36.7 KB Created: 2020-08-15 10:39:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60983158482c6f2359a4a4a09bebc3dd SHA-1: bef0ddd774a2eb3516fb414f9786bbf45f68561c SHA-256: 3ec49ab0069e125f8854ca551b5f2cada6024c6d6dbc5493fc0bfe036288fbb7
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=plush+crib+sheet+saver'. The document body, though heavily obfuscated, also contains this URL and other Shopify-hosted PDF links, suggesting an attempt to lure users to potentially harmful content under the guise of product information.

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=plush+crib+sheet+saver
    • http://files.gsdhjaofficial.com/uploads/1/3/0/8/130874359/3652077.pdf
    • http://files.apics-anaheim.com/uploads/1/3/1/6/131607662/nolumumixono.pdf
    • http://files.worldscreenculture.tv/uploads/1/3/1/3/131383949/kojosikogubonufepu.pdf
    • http://files.paulpaper.net/uploads/1/3/1/8/131856191/pinemexezuk_sibefebojugorad_gimafekobe.pdf
    • http://files.marianchoraltuam.com/uploads/1/3/1/8/131871462/tivizuxinute.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/79206650429.pdf
    • https://cdn.shopify.com/s/files/1/0435/2642/2687/files/kaganapan_ng_pandiwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8589/7627/files/72669610963.pdf
    • https://cdn.shopify.com/s/files/1/0431/8747/0496/files/suwiribar.pdf
    • https://cdn.shopify.com/s/files/1/0431/6597/4690/files/zovilupap.pdf
    • https://cdn.shopify.com/s/files/1/0430/0088/9507/files/sem_characterization_of_nanoparticles.pdf
    • https://cdn.shopify.com/s/files/1/0431/4061/2247/files/alchimiste_coelho.pdf
    • https://cdn.shopify.com/s/files/1/0433/6615/4394/files/chemistry_class_11_chapter_5_notes_download.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_off000051e7.bin
401859e13d0b677995fcfe4e19b2c5ed4ea4995551597758d8cbef2b875f6ae0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51E7 5088 bytes
font_01_sfnt_off00006326.bin
e67f68a8bbd4d4a1286921191e6426e0000271957d571c8f6f40ad8cd4d3b033		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6326 10312 bytes

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