Malicious PDF — malware analysis report

Static analysis result for SHA-256 869192b9b946f753…

MALICIOUS

PDF

48.2 KB Created: 2020-08-30 09:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bcd4f7436a5f55c882076d25545cc32 SHA-1: 790ded21905b7c26da8f756025a1ad25efd560f2 SHA-256: 869192b9b946f753ea660d6e32e0a7a80b2997e8a8393156e4882c7bad2ef34f
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.com'. Another critical heuristic identified a PDF link farm, suggesting the document's primary purpose is to host a large number of external links. The document body is heavily obfuscated but contains the same malicious URL and several benign Shopify URLs.

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.com/wix?keyword=teen+gohan+combos
    • https://cdn.shopify.com/s/files/1/0432/5670/9273/files/30959243749.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/kathi_sandai_mp4_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/0389/6217/files/80710983829.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab1ce2e910374072bfb857a175e262b6.pdf
    • https://static.usrfiles.com/ugd/804ff6_f23df014f2ec4ec69cc41d65f8c26dbb.pdf
    • https://static.usrfiles.com/ugd/a43ec6_7764327d813f49d7afad388135b1e94f.pdf
    • https://static.usrfiles.com/ugd/b8c837_941cb09722124005a9a745a8750c1b6b.pdf
    • https://static.usrfiles.com/ugd/5a1791_7169cea3747e47039ae2ac2be18b46c1.pdf
    • https://static.usrfiles.com/ugd/599026_afb67a5e1bb34605898fff7576491bff.pdf
    • https://static.usrfiles.com/ugd/b8c837_d959ab4ea29e44358bc3c9c5325339e3.pdf
    • https://static.usrfiles.com/ugd/1e32c2_2c5135995ccc459ba2d480ac543f69ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_6cd13bc5671c41d9bfb1df8e0549c6cc.pdf
    • https://static.usrfiles.com/ugd/bb13a2_5649f19231f9473eb81664b2659e737d.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_off00006821.bin
88e00dfa3e19f3c520c5e8d792d79c193fb5b6b5db4c2089ded0104d56ff346c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6821 5172 bytes
font_01_sfnt_off0000799a.bin
c574b2b68bbed2ae049986e9e2ac314471d1b6334a6e8eae825a46471fb6f352		 pdf-font-stream PDF embedded font (sfnt) at offset 0x799A 11608 bytes
font_02_sfnt_off00009fa2.bin
12198ed304d8e74df64bcaa8a4aae6da6436d73ceeb6d758e01031f89a18fcfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FA2 16076 bytes

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