Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a5113916d461f39…

MALICIOUS

PDF

35.9 KB Created: 2020-08-31 04:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a147ad263707474a1f6d5cb972bbc99 SHA-1: aba5a184af8d56452938078127937a565e124058 SHA-256: 3a5113916d461f394afe0f9c597cbd38fdebfea72c5994751dd5b9598643173f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wix?keyword=devilbiss+jga+502', suggesting a lure to a malicious site. The presence of a link farm further indicates an attempt to distribute malicious content or traffic.

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.ru/wix?keyword=devilbiss+jga+502
    • https://static.usrfiles.com/ugd/f55bec_296fed8f78104d2ca6d9a77c64bae200.pdf
    • https://static.usrfiles.com/ugd/b47706_31891b65f1904b8789b0014ecc3e0cae.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c29b7e70c884c9f9c1d1b44e6d7cdb0.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_b89e5d3e4e1d4d7a855628b33e9e287e.pdf
    • https://static.usrfiles.com/ugd/04e6f9_da590815f1ad433b87a7b7ee6c83e800.pdf
    • https://static.usrfiles.com/ugd/3826db_a642080fc499472a8498ed5935a55186.pdf
    • https://static.usrfiles.com/ugd/2813e2_ae7f0581b81f41909561203c30694942.pdf
    • https://static.usrfiles.com/ugd/b0b521_4e8f9dfaefbd4d06a4cf4a8b0294a19b.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa7348c0ba49440286388a7f8114c242.pdf
    • https://static.usrfiles.com/ugd/36f25b_a809461ec7ee4ebcabc06f58da54b3bd.pdf
    • https://static.usrfiles.com/ugd/64d889_2dd1a442980d40ffb107da975acd4101.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_off00004b82.bin
5fda6f705cd81e7eaef2a19f148209b312302992197d19a9a1194504c6e33d16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B82 5432 bytes
font_01_sfnt_off00005e1f.bin
bda82bda7ba581308141fef3377b94aad6743c82d33e55bf40756e15fb0399a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1F 10656 bytes

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