Malicious PDF — malware analysis report

Static analysis result for SHA-256 9163187aa3609165…

MALICIOUS

PDF

92.4 KB Created: 2020-08-31 17:00:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f14885a1ac73a295d81aed082c99a49 SHA-1: 80fe77abdb1f36deab9caa3c38d15d557da6973c SHA-256: 9163187aa36091653a5875a1fc0b7923d5e0597d4fda5fb6a933ad76988d60da
162 Risk Score

Malware Insights

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

The PDF contains a heuristic indicating it's a malicious redirector link, specifically pointing to 'ttraff.com'. It also exhibits characteristics of a link farm and uses a social engineering lure to trick users into installing browser extensions or updates. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the intent to redirect the user.

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=chapter+3+scarlet+letter+answers
    • https://static.usrfiles.com/ugd/912de2_bad2a536d58e42f6ad79d5bd40859ad5.pdf
    • https://static.usrfiles.com/ugd/efb3f0_f73ee10cdbfd4c48973b5024a569bd26.pdf
    • https://static.usrfiles.com/ugd/6846fe_8fbf9cf5c0974756a56281cbb769eeb6.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1688ae0d4854c749b564f0fb6d15fe0.pdf
    • https://static.usrfiles.com/ugd/cc089a_910f385a400e424fb7f374375089e1f3.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4a4401df53745c78a80f00dd8fe5a83.pdf
    • https://static.usrfiles.com/ugd/d90490_ca19e2f1d5ac43ef9d712aead339c2bf.pdf
    • https://static.usrfiles.com/ugd/b444d4_1e352d4cc0bc4939a04b31b3c68e2b12.pdf
    • https://static.usrfiles.com/ugd/b8c837_45c30c6ee8034738b1259254db7c5863.pdf
    • https://cdn.shopify.com/s/files/1/0429/2716/1507/files/video_show_apk_hack_mod.pdf
    • https://cdn.shopify.com/s/files/1/0430/1638/8761/files/pudakedatawapuketije.pdf
    • https://cdn.shopify.com/s/files/1/0431/1885/4306/files/jedadutelolulow.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000130c9.bin
ef4299d39f986bd48174785e684bdd2212923c9065638238e428a3d7f017ced0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130C9 5184 bytes
font_01_sfnt_off00014271.bin
28a98f8d7e76256215929e9c2bbf603f942f618d7b7e29c31b5294ce1033567f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14271 10088 bytes

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