Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2fa7260bb5b1c6…

MALICIOUS

PDF

44.5 KB Created: 2020-08-31 12:25:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8842552a8217a2f6610047d6e9da0c05 SHA-1: 45e1813f84c9dc017ce3eb72ada42315e3720b39 SHA-256: 9d2fa7260bb5b1c66d16a536052adf7b263d778a80bf4a5a7a0d25be142bf6c3
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.me/wix?keyword=pork+scratching+health'. Additionally, it exhibits characteristics of a PDF link farm, embedding a large number of external links, many of which point to shopify and static.usrfiles.com domains. The document body, though heavily obfuscated, also contains the malicious URL. This suggests the primary goal is to redirect the user to malicious infrastructure.

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.me/wix?keyword=pork+scratching+health
    • https://cdn.shopify.com/s/files/1/0430/6812/9431/files/72117264468.pdf
    • https://cdn.shopify.com/s/files/1/0431/6600/7445/files/tamasha_marathi_movie.pdf
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/70543263299.pdf
    • https://cdn.shopify.com/s/files/1/0437/1746/0120/files/ancestral_property_act_2020.pdf
    • https://static.usrfiles.com/ugd/6290de_86645fc773d54ae7b7bdeb653d9089e9.pdf
    • https://static.usrfiles.com/ugd/4bdc6d_8e278e0617e3443d8a3d95e1ce4fa045.pdf
    • https://static.usrfiles.com/ugd/314c35_a9393d87a6654facb34f63876b87e46f.pdf
    • https://static.usrfiles.com/ugd/b8c837_edafdf3b821646bfb809bb8d05dfe42f.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e41fb55a0eb43d0b76671f3faa189dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_04040f7608d74a0495fb67801fd37b0b.pdf
    • https://static.usrfiles.com/ugd/de65f7_a1ae9f29d0e74f00948b2adeb9ba3381.pdf
    • https://static.usrfiles.com/ugd/accd1f_4d50bb8e10f44ae9ae3d87fd1a844eab.pdf
    • https://static.usrfiles.com/ugd/cfbfd2_a18f38cddf5b4298b5fe13748100dd34.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/1/0437/1746/0120/files/ancestral_pro

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ffa.bin
b187573bf803061d9ad4c87304e2c274671e3864f087c676ef4b88c69019bf0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFA 5128 bytes
font_01_sfnt_off0000816b.bin
e870e74f0a8bee1d18891e685d6fd996ca777d6b3da40baf1ee70b4b281c26ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x816B 10472 bytes

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