Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f6275c671678205…

MALICIOUS

PDF

64.8 KB Created: 2020-09-02 01:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61eaea452fd8259e48e6a88f0c19b8f7 SHA-1: 65f409393f17a86817fc6ce47ccbc7e861addb2d SHA-256: 1f6275c67167820547546fe6e6a0ef61f563c770545a49705db5ec1d1be31060
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.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'static.usrfiles.com' being a dominant host. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=relative+dating+and+unconformities+lab', suggesting a lure related to academic content to entice users to click the malicious link.

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=relative+dating+and+unconformities+lab
    • https://static.usrfiles.com/ugd/0511f5_22bf94ab88a14a6ca594a589cee77025.pdf
    • https://static.usrfiles.com/ugd/a2e20a_dab29b88028c4402be4bcc55bc6ecbdd.pdf
    • https://static.usrfiles.com/ugd/b8c837_b850ac65a99343d0a63973fbdcd63e80.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_72c83ff767fb452984429d2c88f07e6c.pdf
    • https://static.usrfiles.com/ugd/cafc24_6bd59d07d10f4d6e9c4aeb88c7796a41.pdf
    • https://static.usrfiles.com/ugd/909b15_59ea9730af0f441cb834ff534efab1c2.pdf
    • https://static.usrfiles.com/ugd/6cf392_e362093dee3d431eae40e878da952d00.pdf
    • https://static.usrfiles.com/ugd/63022f_bf1a74da54f54fcb9efb3fc75edc3fe2.pdf
    • https://static.usrfiles.com/ugd/8a419d_9707b48d2ce64a06b31f6b68666d581e.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd996708c17744d09962c13e2beea871.pdf
    • https://static.usrfiles.com/ugd/bb13a2_1a349ff9a4c64a46888ec1580a50ec60.pdf
    • https://static.usrfiles.com/ugd/913720_8d29fd6915c546d3aae9975a51a295e7.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_off0000bebf.bin
eed06be2bf0f89bd587cb3af760a1fde1d34afb269f2ee6b9cb2c9448b7277bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEBF 5548 bytes
font_01_sfnt_off0000d19a.bin
7c7ec2cc856e93e66e8e8cdfe988550e9e5f59e40d4f86e46af2817a63d9ce8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD19A 10804 bytes

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