Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b637f50b4f3bae2…

MALICIOUS

PDF

32.8 KB Created: 2020-08-29 23:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 501342f4359ae2545e4dc7d2d8f00816 SHA-1: 4d239f0d7442a43e53256cb85ff99d043a25c145 SHA-256: 2b637f50b4f3bae2df24ccfc8f99182405c1578c9db0c1216b67973f574cbe07
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.com/wix?keyword=in+the+air+tonight+phil+collins+download, which is flagged as a malicious redirector. The document body appears to be obfuscated or corrupted, but the presence of numerous links suggests a link farm or redirection tactic to lead users to malicious 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.com/wix?keyword=in+the+air+tonight+phil+collins+download
    • https://static.usrfiles.com/ugd/b8c837_7a23793e39214501a84623e8fb0e75d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_5df9caff6de54f7495ebebf00a58924b.pdf
    • https://static.usrfiles.com/ugd/b8c837_beaf0f4ae0944100b8047c300d0beb16.pdf
    • https://static.usrfiles.com/ugd/493135_eb41560fe7bd49bb931a8a07b17c2ee3.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_34b66e056e8b478491431b100d4de086.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/92602770963.pdf
    • https://cdn.shopify.com/s/files/1/0438/7989/1099/files/elements_of_a_poem.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_7eb03d54ae2943d58d32bad2a4a6f0b5.pdf
    • https://static.usrfiles.com/ugd/b52961_b6d6fe8ea33d45cb9f3ffd891a7aa279.pdf
    • https://static.usrfiles.com/ugd/3aee12_9121de44e2c64f98ad31629a10dfa378.pdf
    • https://static.usrfiles.com/ugd/63022f_4d2004a2b1dc41f38b7b27af97ce23f9.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_off0000433c.bin
c442494cddd914ca703d1f509a8db3e65480ae67261fb54d5543c318baa21628		 pdf-font-stream PDF embedded font (sfnt) at offset 0x433C 5364 bytes
font_01_sfnt_off00005577.bin
4e566676a3bd774dc8c0bb34888fb213a4a3aed43a3fd87de05bb0e46e79afcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5577 9676 bytes

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