Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5cd34c047ecbe7b…

MALICIOUS

PDF

53.9 KB Created: 2020-08-30 23:31:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 439e8ccaf68fb0ade69342a9e0b5c2d4 SHA-1: e16185d9c11158d46044a500632d46e762bffcf8 SHA-256: e5cd34c047ecbe7b9b407020e48160f0862938722d371cb9692dc8354f37adc7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a lure for a 'Gossip Girl season 3 torrent' and includes a critical heuristic firing for a malicious redirector link pointing to ttraff.com. This indicates a social engineering attempt to trick the user into visiting a malicious site. The document also contains a large number of embedded links, many pointing to static.usrfiles.com, which is flagged as a link farm. The primary malicious URL is https://ttraff.com/wix?keyword=gossip+girl+season+3+torrent.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=gossip+girl+season+3+torrent
    • https://static.usrfiles.com/ugd/b8c837_90469ef81c544b36abbc2934d9dec548.pdf
    • https://static.usrfiles.com/ugd/353d00_137e72105ac5493dbbf6c6a3b1e38618.pdf
    • https://static.usrfiles.com/ugd/2f8cea_082d7f79e4fa47d284e7cbe0c4155b1a.pdf
    • https://static.usrfiles.com/ugd/c0b427_37c52177af9b44fd8cbfb17a6a2d2c3b.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3105335a3334456960b9486196b0a17.pdf
    • https://static.usrfiles.com/ugd/b8c837_735c6288f6dc435e9ebd8326560b260d.pdf
    • https://static.usrfiles.com/ugd/b8c837_03eac66e30104d518342abf41c340fb7.pdf
    • https://static.usrfiles.com/ugd/33a16d_2e2c4dbbbfec4d129dcfab570d1f27f2.pdf
    • https://static.usrfiles.com/ugd/b8c837_96fd505f73ce4c528ffd0cc23ef824c5.pdf
    • https://static.usrfiles.com/ugd/b8c837_e78e36a1c22747dcb339d72b2da3f9c5.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9d5730f48464529ad166e3f86affca9.pdf
    • https://static.usrfiles.com/ugd/b8c837_0990046c9ea74b949eaad5d8f831e0b0.pdf
    • https://cdn.shopify.com/s/files/1/0430/7373/2769/files/10337593046.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2485/files/astm_a106_grade_b_mechanical_properties.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068f9.bin
4253ce374f546ed82c0b962bfad5e193173c5af7311640f7068ccdda2cb38311		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F9 2960 bytes
font_01_sfnt_off0000737a.bin
6ad56def25cddc658d7ff311bbe3ec528703087f5b9fbecd847f83b311963f7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x737A 4968 bytes
font_02_sfnt_off00008462.bin
0b3aac29b2f7f6d5120ea63e20d39ef2152ba00eadf1e2cf54f200695230f308		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8462 5780 bytes
font_03_sfnt_off000092f5.bin
15730e44eaeddb633445c6a51618b31b49d3022a15220e61ed9d08462e98c2fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92F5 12956 bytes
font_04_sfnt_off0000bc08.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC08 4324 bytes

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