Malicious PDF — malware analysis report

Static analysis result for SHA-256 3199af78f1441e9c…

MALICIOUS

PDF

35.8 KB Created: 2020-08-29 10:02:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ff90b120de075a2465437ad176c0914 SHA-1: 48273cbd4ec25bc5bf758a51afd5ad18bd0b1c49 SHA-256: 3199af78f1441e9c41cbbbf07c0fd668351e8a4a3ba78917a170f5c4225d84d5
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.cc/wix?keyword=veera+tamilan+album+song++masstamila', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL and other links to static.usrfiles.com, suggesting a coordinated effort to lure users to potentially harmful content.

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=veera+tamilan+album+song++masstamila
    • https://static.usrfiles.com/ugd/b8c837_169c9eff585f45d593665a06615ddecc.pdf
    • https://static.usrfiles.com/ugd/b8c837_e324195a8bcd4261ada8195db2fe5441.pdf
    • https://static.usrfiles.com/ugd/b8c837_c3a0684e3e0f4a4e8832b2a17d4eba19.pdf
    • https://static.usrfiles.com/ugd/b8c837_edfd736b7b72421ea60e97ff0a21e8e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_a917695fcc12412e834d052dc22b206c.pdf
    • https://static.usrfiles.com/ugd/b8c837_d02b278c217a4eadb270f129d22f049e.pdf
    • https://static.usrfiles.com/ugd/b8c837_988bedc97cdb49f8883d70279d691a8f.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd78f8d9e347482f9634c1999cee5777.pdf
    • https://static.usrfiles.com/ugd/b8c837_574a705aa07d4f799105fe34f2ab17ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c072ce3718d48298045359ad6fd897e.pdf
    • https://cdn.shopify.com/s/files/1/0434/4594/4481/files/33810914196.pdf
    • https://cdn.shopify.com/s/files/1/0431/0591/0933/files/68754397193.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_off0000487c.bin
4241111b0745a140b876331785e09fef3af8099c7837bd5b8b81cc50e3a9cc71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x487C 5108 bytes
font_01_sfnt_off000059be.bin
a3bf9b6342a1469a6d84e5b12c0508711137170bbb42fd6b937fa251eebbb452		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59BE 13140 bytes

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