Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4e46ff4ab6239de…

MALICIOUS

PDF

53.8 KB Created: 2020-08-29 19:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6729c07c59d14800615c0e493f619982 SHA-1: ac41bcaafd0a0977545b1455cc081ae8466861ca SHA-256: f4e46ff4ab6239de058d40932a8758fa7b4ea1ccf10c110826c4bfa1b35850fd
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=ffxiv+botanist+gear+guide'. This URL is presented within the document body, disguised as a guide for an online game. The PDF also contains a link farm heuristic, indicating a large number of external links, many of which point to static.usrfiles.com. The primary malicious URL is the most critical IOC.

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/wix?keyword=ffxiv+botanist+gear+guide
    • https://static.usrfiles.com/ugd/b8c837_597443141cdd4dd08befe21a0b7ad014.pdf
    • https://static.usrfiles.com/ugd/b8c837_88cba62e2da04a3b9fda8a00b430dbeb.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef41905ea79741ee8c06a51639c6abb8.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdc032211353441aaf2642c7d3f9f21f.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5479/files/woxumuligumava.pdf
    • https://static.usrfiles.com/ugd/b8c837_a491572542ef42c1947d8db075ac2291.pdf
    • https://static.usrfiles.com/ugd/b8c837_0202632f4e124db693db91f62f856c52.pdf
    • https://static.usrfiles.com/ugd/b8c837_1300050a2801469088c90afe4681e4c0.pdf
    • https://static.usrfiles.com/ugd/0a593f_cfdb97d11e8f48eebeb534053bc65671.pdf
    • https://static.usrfiles.com/ugd/b8c837_7046c48c428e4ba9b66b01ef9ae738b3.pdf
    • https://cdn.shopify.com/s/files/1/0438/0321/3984/files/tabla_de_alimentos_ricos_en_potasio.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/rasefunitameme.pdf
    • https://cdn.shopify.com/s/files/1/0435/0931/7787/files/21_amendment_in_constitution_of_pakistan_in_urdu.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_off00006fd3.bin
0cf2bd511a072f6d6b5b77fc5930821547e6977271987bc9501f0152171ff06f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD3 5148 bytes
font_01_sfnt_off00008162.bin
0c77ec53e9cd07d55295404defa7909e6c871761aa536fe39db5357a493c9c41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8162 10976 bytes
font_02_sfnt_off0000a6a5.bin
73bb1f519e29941fc98367ae33a8b679223d41029fbf73fb5c585da9ec8c2502		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6A5 16204 bytes
font_03_sfnt_off0000bbd6.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBD6 4324 bytes

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