Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd0fdf901e56d1f5…

MALICIOUS

PDF

41.8 KB Created: 2020-08-30 20:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74383885322d5468d641e06b641a9b0e SHA-1: 7f151b52a6be5eb3ab0530e6f18edee3e56acced SHA-256: fd0fdf901e56d1f591329f9403bab6d4f2de304f7c146571979a0a131ec9e605
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.ru/wix?keyword=download+nfs+most+wanted+highly+compressed'. This URL is designed to lure users into downloading potentially unwanted software. The document also contains a large number of embedded links, many of which point to 'static.usrfiles.com', suggesting a link farm or distribution network for the 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.ru/wix?keyword=download+nfs+most+wanted+highly+compressed
    • https://static.usrfiles.com/ugd/cd79e3_bc30074f8af644059ce46d362f8d614f.pdf
    • https://static.usrfiles.com/ugd/c33cdb_42bed23985ff4e6d8a302fbad1d063de.pdf
    • https://static.usrfiles.com/ugd/b8c837_0399333a34a74fe2886e000b8b12b952.pdf
    • https://static.usrfiles.com/ugd/ab0441_a2b0a2a559674884897ab2eba71789f1.pdf
    • https://static.usrfiles.com/ugd/50c35f_0db1a242d888489b9d0f4d03b866b47a.pdf
    • https://static.usrfiles.com/ugd/3aca14_3fc742f1c4854f1986adddd52b55a957.pdf
    • https://static.usrfiles.com/ugd/72216b_fdb76fc2517140d1887408107210ea8f.pdf
    • https://static.usrfiles.com/ugd/60933b_c77663391dc14dfe8ffe9ecb86daba92.pdf
    • https://static.usrfiles.com/ugd/b8c837_02fcd7a8c76540ff8357d32089e30245.pdf
    • https://static.usrfiles.com/ugd/b8c837_97c468cfd3ee45e4b0c3034c15c84f8b.pdf
    • https://static.usrfiles.com/ugd/e2c250_b8e858792a774ca1824b69a2cc605886.pdf
    • https://static.usrfiles.com/ugd/5de1df_1591fd474a564c9f9ada808105f5f27a.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/devejituxavonevewubi.pdf
    • https://cdn.shopify.com/s/files/1/0436/0044/5597/files/watch_romeo_and_juliet_1996_full_movie_online.pdf
    • https://cdn.shopify.com/s/files/1/0438/2998/5430/files/silabus_osn_biologi_sma_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/9133/6099/files/busuu_download.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_off00006270.bin
caf8f719771fc15d2fe181c719733377c9ead36ffec03fd39764ef3b5017ec31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6270 5760 bytes
font_01_sfnt_off000075fd.bin
9b6acdc9bf17ff6243bf8a636a7e9ff1cc1b428dda05748189d636da37e02cd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75FD 10576 bytes

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