Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed4e8630327d4afd…

MALICIOUS

PDF

48.8 KB Created: 2020-09-02 21:40:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77caf62f76bdbd4f263f9e21435bb156 SHA-1: 4c3515d69a5c866160c4ac8aebd289dd7574db58 SHA-256: ed4e8630327d4afd319388a2de09c2acd6d97603539c9eb8164a886b9ed59975
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 'ttraff.club'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a brain training game. This link is likely intended to redirect users to a malicious site for further exploitation or credential harvesting. The file also contains a large number of embedded URLs, many pointing to Shopify, which is characteristic of SEO poisoning or link farm techniques to obscure the malicious destination.

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.club/wix?keyword=elevate+brain+training+game
    • https://cdn.shopify.com/s/files/1/0434/1900/9189/files/puerto_rico_highway_and_transportation_authority.pdf
    • https://cdn.shopify.com/s/files/1/0429/8113/0394/files/velezasaza.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/74624106495.pdf
    • https://cdn.shopify.com/s/files/1/0435/2606/2239/files/maths_aptitude_shortcut_tricks_in_tamil.pdf
    • https://static.usrfiles.com/ugd/8acad3_b790aee273ea45dc9984d5a29efdcb0c.pdf
    • https://static.usrfiles.com/ugd/b8c837_d025efe1c610435089f274fa59d1a714.pdf
    • https://static.usrfiles.com/ugd/9b33c5_bc012378489040e28ef8f700b4268209.pdf
    • https://static.usrfiles.com/ugd/b8c837_93dae03bf6514f08b27d70aaf29ecec3.pdf
    • https://static.usrfiles.com/ugd/6260fe_559a14ca6d5146fc92f2202d407e95ed.pdf
    • https://static.usrfiles.com/ugd/451461_da520071abd7470ab760d3b1f9868414.pdf
    • https://static.usrfiles.com/ugd/a4d998_c5ddabd85ab3412a9f444e3a9ac7ae5e.pdf
    • https://static.usrfiles.com/ugd/2813e2_cff5aa53cfc146429c2a6760a43f8be4.pdf
    • https://static.usrfiles.com/ugd/b8c837_779b68eb25c74137b70b912d9a4bf8a8.pdf
    • https://static.usrfiles.com/ugd/6908d7_12d357ad30f942ea9a3c0418d05fca9c.pdf
    • https://static.usrfiles.com/ugd/b4a829_1b2f6ce0b60d413b9ab00e5b58167ca6.pdf
    • https://static.usrfiles.com/ugd/48bf55_c1b12729358741259d9cf729cc2d8d32.pdf
    • https://static.usrfiles.com/ugd/9d869b_54adf19d9d654550841bb3ecf7a44073.pdf
    • https://static.usrfiles.com/ugd/b48b60_053a3efe7f9d46fe971bd02fe01dd123.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a6ec84b551244b7a8abb88feec3d9f0.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_off0000739a.bin
4bfd00b49e0996fbab7ba4c38fb87ca8ea775d99a16164fdd995bb5543cdedc2
pdf-font-stream PDF embedded font (sfnt) at offset 0x739A 4664 bytes
font_01_sfnt_off00008356.bin
fc35eb581085e52291cb50e642e64df0a2d43d3a247c357a7fb558f0a9e49b72
pdf-font-stream PDF embedded font (sfnt) at offset 0x8356 10588 bytes
font_02_sfnt_off0000a77d.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA77D 4324 bytes