Malicious PDF — malware analysis report

Static analysis result for SHA-256 a30db9b1a2c54840…

MALICIOUS

PDF

41.8 KB Created: 2020-09-02 12:12:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5110547ffc5005ce0d3148de782d3be SHA-1: a019514e533ec4cd34bbe80f903abf58ceb1b13f SHA-256: a30db9b1a2c54840af34bcd3037811158fc48f2484784c44cb487a91afe027c7
130 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, disguised as a payment lure. The primary malicious URL, https://ttraff.ru/wix?keyword=deferred+payment+agreement+template, is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains references to the lure and the malicious URL.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=deferred+payment+agreement+template
    • https://static.usrfiles.com/ugd/ab63e3_6114a57ae5d54a83b1c1ddc3fddac290.pdf
    • https://static.usrfiles.com/ugd/b8c837_0477fee2ee2e4f7086ad927eaeb3ddf1.pdf
    • https://static.usrfiles.com/ugd/2b98a3_35c0adcb487f4ba08649d8dac541e2e9.pdf
    • https://cdn.shopify.com/s/files/1/0428/0867/2423/files/15417548557.pdf
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/autocad_electrical_2015_iec_library.pdf
    • https://static.usrfiles.com/ugd/a43ec6_70cd07c2cfca42b899ab5e64404f6bfc.pdf
    • https://static.usrfiles.com/ugd/b8c837_9553452c948c4a1ea6cc2be810e92e09.pdf
    • https://cdn.shopify.com/s/files/1/0437/7339/5101/files/dogekabupofutaxax.pdf
    • https://cdn.shopify.com/s/files/1/0438/1478/1088/files/53470179424.pdf
    • https://cdn.shopify.com/s/files/1/0460/2216/4639/files/old_assamese_mp4_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/35850683080.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_off000065de.bin
a4071af51d86df6657cd6d296f62dc796be506fa436e4140a359512b205ccf93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65DE 5284 bytes
font_01_sfnt_off000077d0.bin
4b193e972886c801647053abaeae2beabbb7ede6eb6ef8e436a9f320d3ee112e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D0 10256 bytes

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