Malicious PDF — malware analysis report

Static analysis result for SHA-256 509943b1156150ae…

MALICIOUS

PDF

40.0 KB Created: 2020-08-29 07:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64f2407658913c7d865ff8e9e077fe39 SHA-1: 5c7f29dbb8e82cede74541e3b9a42d3c78326f95 SHA-256: 509943b1156150ae5f076d35f7fd8c07de9a08afea37b2d6cb3a4c46f064de5d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to download a movie. This link is likely intended to lead the user to a malicious site or download further malware. The file also contains a large number of embedded links, many pointing to 'static.usrfiles.com', which is flagged as a link farm.

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=descargar+pelicula+cobardes+completa
    • https://static.usrfiles.com/ugd/b8c837_c16040f2b1494269afa06d1499528da4.pdf
    • https://static.usrfiles.com/ugd/b8c837_b78f99b4222b4a828ab3645a0b5c9f49.pdf
    • https://static.usrfiles.com/ugd/b8c837_955cc8c129214fe992c80447ae5ef0ac.pdf
    • https://static.usrfiles.com/ugd/b8c837_c05f146b81c2431ca25b7161eda455d1.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/mubitukigaw.pdf
    • https://cdn.shopify.com/s/files/1/0427/5788/2022/files/kumutemiginirutuvotip.pdf
    • https://cdn.shopify.com/s/files/1/0440/4215/8245/files/caracteristicas_del_enlace_metalico.pdf
    • https://cdn.shopify.com/s/files/1/0435/1823/0688/files/diamines_and_chemicals_limited_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/fexujaraduvibin.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a36094868c549edb7d52b3539906ddd.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee3a4942dc6c43afaf9115e34248050d.pdf
    • https://static.usrfiles.com/ugd/b8c837_3bd8c060f0054c4aaf48efed9692b423.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_off00005bbc.bin
095629640cb28d34673024e7607dddb74a18c8161c8ed21aea4d14a724323cb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBC 5532 bytes
font_01_sfnt_off00006e6c.bin
5367e200491a28e60509682320f7dbf6b980a636ab66a058094de5a5061c5059		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6C 10896 bytes

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