Malicious PDF — malware analysis report

Static analysis result for SHA-256 65e4bf57ece47114…

MALICIOUS

PDF

41.0 KB Created: 2020-08-30 16:12:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5227b494e5f9a3da60106aaedbb44741 SHA-1: 32edaa9739a5b7f68cf6e56a175bf91b0f606f37 SHA-256: 65e4bf57ece47114ee3d95b026c61ddf0d5bb396f24bf21b6fd96547181714ae
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a malicious redirector link and a large number of external PDF links, indicating a link farm or redirection scheme. The embedded URL 'https://ttraff.com/wix?keyword=okami+gold+dust' is identified as a malicious redirector. The document's structure and embedded links suggest an attempt to lead the user to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=okami+gold+dust
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/99965f_e045fd95e9bf43a6b746e159b9de46d8.pdf
    • https://static.usrfiles.com/ugd/a107db_9bc542ae003842f8b2b5262fd9733930.pdf
    • https://static.usrfiles.com/ugd/99afdc_8bee8de34c9a41cfad66ecc600631feb.pdf
    • https://static.usrfiles.com/ugd/8de238_721e1f918c914b40b17c63a5b898c537.pdf
    • https://static.usrfiles.com/ugd/b8c837_d0614adc855f4867a65f5f7e76bb8fdc.pdf
    • https://static.usrfiles.com/ugd/3bf302_807c869b7cc5413a95de6e64dc0f3550.pdf
    • https://static.usrfiles.com/ugd/b0b521_7a4d76926c894b6a95899cec49bdc98a.pdf
    • https://static.usrfiles.com/ugd/b8c837_29d012bf2c4844658994e1a5db8f2014.pdf
    • https://static.usrfiles.com/ugd/b8c837_eaec37f21ff64c6ca47c91c912292bbe.pdf
    • https://static.usrfiles.com/ugd/26481d_7e82dcc85bbc421b8a5cc6a6a668a221.pdf
    • https://static.usrfiles.com/ugd/724bd4_409227a0c8cf43b48613dc514bc7e62e.pdf
    • https://static.usrfiles.com/ugd/90c678_c92dde325cab4c9a8107859aa9f4a9f2.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f09e834ede14f4287359d0c1aa2bbd8.pdf
    • https://static.usrfiles.com/ugd/6846fe_a003fb573767481db188f5d559bcf2fe.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006354.bin
e45e48173a1e3ed64d3b7b0845550674e2e94acdc38e05090b22221ca7cc4c70
pdf-font-stream PDF embedded font (sfnt) at offset 0x6354 5140 bytes
font_01_sfnt_off000074c1.bin
601e79d4c4c6797788e76d788f8152267db5db059bad16b817c1f8051d9677bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x74C1 10160 bytes