Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b3059d3b14250e1…

MALICIOUS

PDF

36.1 KB Created: 2020-08-17 12:30:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a461d8c213c46d6b7ba47d9f3af31b7 SHA-1: 400adc8a8668978701293f7c1bab8b39d2492bab SHA-256: 4b3059d3b14250e16e7076690543c320296545d063b0239081f842976caa3b36
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to piano sheet music and the malicious URL, suggesting a lure. The primary malicious URL is https://ttraff.cc/pify?keyword=in+the+river+piano+sheet+music, which is likely used to redirect users to a phishing or malware distribution site.

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=in+the+river+piano+sheet+music
    • http://delem.coffee2rise.com/uploads/1/3/0/8/130873791/7137846.pdf
    • http://files.vetwoundlibrary.com/uploads/1/3/1/8/131871479/mipabibajab.pdf
    • https://cdn.shopify.com/s/files/1/0448/8301/7895/files/28670743662.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1204107997.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/zojopisuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/4971/1781/files/cbse_examination_bye_laws_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12086745869.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/tumudu.pdf
    • https://cdn.shopify.com/s/files/1/0446/2955/7411/files/junior_girl_scout_way_badge_requirements.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/53710453689.pdf
    • https://cdn.shopify.com/s/files/1/0436/4192/9886/files/boundary_wall_estimate.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27482348981.pdf
    • https://cdn.shopify.com/s/files/1/0436/6427/7657/files/anatomy_and_physiology_of_brain_and_nervous_system.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/sipaj.pdf
    • https://cdn.shopify.com/s/files/1/0439/7318/1598/files/loresuli.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000442e.bin
5c0553f442a93f5f8ff360bda6b4b11911ffa90e0f8a122bb913a22ae4833061		 pdf-font-stream PDF embedded font (sfnt) at offset 0x442E 3136 bytes
font_01_sfnt_off00004f72.bin
7e3b3fe474a18a8040f5fabaa22b5e8ad0dd4718555b20026728fcf0e8ea43d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F72 5140 bytes
font_02_sfnt_off000060b8.bin
7b20899ace2b4e5097db67678c7e821b7c61eaba8fb661c33fa2fb232b766b2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B8 9640 bytes

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