Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e87318d3647fc17…

MALICIOUS

PDF

44.6 KB Created: 2020-08-30 21:14:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba34a0c1e93e9984fc28dc538d4665a2 SHA-1: f39c80fd4084357ae08ffdbb5f688da508da0bd4 SHA-256: 9e87318d3647fc1706397a055b6631d57539eaaad9dca9a5a330b9f2c6db866f
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=warframe+dagger+zaw'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://static.usrfiles.com/ugd/b0b521_21e460d787ff4f16ac19961ccc64dfab.pdf'. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains the malicious URL, suggesting a lure to a potentially malicious site.

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.com/wix?keyword=warframe+dagger+zaw
    • https://static.usrfiles.com/ugd/b0b521_21e460d787ff4f16ac19961ccc64dfab.pdf
    • https://static.usrfiles.com/ugd/dc98cc_276b493440804c1f9f64deb31aad36b6.pdf
    • https://static.usrfiles.com/ugd/4826f5_8a90546ad32e47b2820c53b4c2721b53.pdf
    • https://static.usrfiles.com/ugd/4e6dd5_232ae4cb4bd54244971567a2ed016215.pdf
    • https://static.usrfiles.com/ugd/1be480_0feaa4c358484d238a8d0433d40752e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_671c8c852bd8412b8eb3fa29d4ddc315.pdf
    • https://cdn.shopify.com/s/files/1/0457/4612/7004/files/bemipazobumamerajetisenov.pdf
    • https://cdn.shopify.com/s/files/1/0432/3734/3387/files/vulorawuwogokakikemu.pdf
    • https://cdn.shopify.com/s/files/1/0463/4666/6146/files/cartesian_to_polar_coordinates_examples.pdf
    • https://cdn.shopify.com/s/files/1/0428/5700/5215/files/bakovufobiwo.pdf
    • https://cdn.shopify.com/s/files/1/0462/3165/0453/files/why_is_unity_hub_just_making_the_dow.pdf
    • https://cdn.shopify.com/s/files/1/0437/4416/6037/files/87900406586.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/
    • https://static.usrfiles.com/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cae.bin
6df60caad96954714b6227cebed58852e3f73633c813979452c63b19db491f1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAE 5172 bytes
font_01_sfnt_off00007e51.bin
c4d54f23f786b99133bdb29172d577d5fd26f4bb0a23e91c1efc0106d1be9607		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E51 12000 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.