Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e6d0e2b8810c39…

MALICIOUS

PDF

46.1 KB Created: 2020-08-29 22:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dd9f4150b5a8251f4d8dca58d86509e SHA-1: 6a3c9090d2451eb65c7747136416516e6f9eb227 SHA-256: e9e6d0e2b8810c39c27c07403d1304a2a8727b523272c2a50576efd47f54ee2f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to ttraff.cc. The document body, though heavily obfuscated, contains the same URL and several other PDF links, suggesting a link farm or redirection tactic. The primary malicious URL is https://ttraff.cc/wix?keyword=to+the+beautiful+you+estrenos+dorama, which is likely used to lure victims to a malicious site. The file also exhibits characteristics of a link farm, with numerous embedded PDF links.

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=to+the+beautiful+you+estrenos+dorama
    • https://static.usrfiles.com/ugd/b8c837_3739687ea30f4b4583b044291ff72359.pdf
    • https://static.usrfiles.com/ugd/b8c837_0966f76519d5435fb58d3384d9b6cfcb.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0856fb6344c4291bfcaca9bee7b91e9.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/c_udp_listener.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9015/files/causative_exercises_advanced.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/allotropic_transformation_characteristics.pdf
    • https://cdn.shopify.com/s/files/1/0440/0896/4246/files/adobe_audition_cs5_with_crack.pdf
    • https://static.usrfiles.com/ugd/b8c837_87138a1d72a24928a626ab6d5ac58bec.pdf
    • https://static.usrfiles.com/ugd/b8c837_a55c3657c1c346ceb08a8fe36e0100b7.pdf
    • https://static.usrfiles.com/ugd/8e1900_0cb0508caad84235b8a25b8344419524.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf257bcf4967410988f926d4b61bbb70.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_off00005eb5.bin
235dd3ccfeb2fd58bd1ba13b4ee4f030fafe6e95e7ace8744824490add2c1727		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB5 6232 bytes
font_01_sfnt_off00007486.bin
0a25826f8c42dcd7e7c6188fa55fb5837c03431c57698c3f6f3c8324b27733f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7486 5340 bytes
font_02_sfnt_off00008681.bin
15bcd2839fbca076b6b83d28a027e255beda4704d9fe0ea5b83ed3514dcddabd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8681 10940 bytes

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