Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb19036688fb9b62…

MALICIOUS

PDF

35.5 KB Created: 2020-08-29 13:39:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aace094cd94a66dc00c26ab72099021f SHA-1: 5825cd5c8dc0f749d90f701c22f234f5249d006c SHA-256: eb19036688fb9b6273c90397d5de8c33fdc73e367b66bddbe7eba5f30a77bd92
150 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a redirector URL, disguised as a "watch online subtitles" lure. The primary malicious URL, https://ttraff.cc/wix?keyword=the+usual+suspects+watch+online+subtitles, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other benign-looking PDF links, suggesting a social engineering attempt to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=the+usual+suspects+watch+online+subtitles
    • https://static.usrfiles.com/ugd/b8c837_dad9782de13042d8bb5f05d20f83d07a.pdf
    • https://static.usrfiles.com/ugd/34ec99_bbe625af758b4c54bf0e29aea663c2d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_c025833d1d234c23969e4c6b46ed53dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_0430c70f4fc94b58b4a252bb469f3863.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b3527c73ac24d6a9bbd2221b5c5f88d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9f1dc50d4e64420ebe5f7f549c71a20b.pdf
    • https://static.usrfiles.com/ugd/b8c837_5453d015b399436893caff5cc32ab263.pdf
    • https://static.usrfiles.com/ugd/b8c837_d43b6ec7328043178df670c7166d41a8.pdf
    • https://static.usrfiles.com/ugd/136d07_9fdad5dee42e4b9d855364c93e70b955.pdf
    • https://static.usrfiles.com/ugd/b8c837_8206a4c10a164c9e9c266a3fe311ea8d.pdf
    • https://cdn.shopify.com/s/files/1/0433/6861/1989/files/baroxoliwofogobivolo.pdf
    • https://cdn.shopify.com/s/files/1/0438/5302/1334/files/mifan.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3279/files/muzezadidedasuwedi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7654/files/2751800268.pdf
    • https://static.usrfiles.com/ugd/41a0b6_07e0065edb234b3c961af99e4ae5f460.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c9ac6d87a2b44e1a8b8648094a9387c.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_off00004d6c.bin
739fc8ec1a00c92d2a1c886eb616c72d910c37797d634d4ad960d5943a8a4db1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D6C 5108 bytes
font_01_sfnt_off00005ed3.bin
06964e6059cf2dbee024c426aabfa980d6b37cdbded643bbec738efaba47a6fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED3 9980 bytes

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