Malicious PDF — malware analysis report

Static analysis result for SHA-256 36056aea608d6e42…

MALICIOUS

PDF

49.0 KB Created: 2020-08-29 14:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6361123a1c68b48bbde97ded34b47ec8 SHA-1: 8dd01c80c43059f74f628c0d1ab9cf3a2c6ed7ef SHA-256: 36056aea608d6e4235634734b144b410263afe6b76cd010425ef46cfd35e54f6
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text related to "ancient indian history notes pdf download" and the malicious URL, suggesting a lure to trick users into clicking the link. The file also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO spam or link farm tactics used to distribute 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.com/wix?keyword=ancient+indian+history+notes+pdf+download
    • https://static.usrfiles.com/ugd/b8c837_4732500090564c9ca60c6fc52565e698.pdf
    • https://static.usrfiles.com/ugd/b8c837_5d7d38052cc645a18f7cd7eeaa0242d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_b4e0da035d4f48fab93217cb11bd96d3.pdf
    • https://static.usrfiles.com/ugd/b8c837_9a0e6519d87c44bdbfcdda93d2e6f5ef.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/zezofegodomid.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0053/files/rubik_s_cube_cfop_solution.pdf
    • https://cdn.shopify.com/s/files/1/0437/0671/2219/files/census_dcuo_blog_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3945/files/wajuwutu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8349/files/tumelowanefatufoki.pdf
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/zebiwugifenedizowowixebo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e1b.bin
1b4d21e17c059e10875f637a6a5d1291465718efff4b03a4b87ea0c62ceb92eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1B 5424 bytes
font_01_sfnt_off00007091.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7091 1800 bytes
font_02_sfnt_off0000791f.bin
56d51b94b5838af99972a6bf5106fc649cd5afde7cf6f3cbe02507e07cea38e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x791F 10396 bytes
font_03_sfnt_off00009cf2.bin
6718babf01df193c2559760538721fa8101e18b73080cf8b525aca8540c38c89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF2 7776 bytes

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