Malicious PDF — malware analysis report

Static analysis result for SHA-256 42ded83837913f8b…

MALICIOUS

PDF

39.5 KB Created: 2020-08-31 08:12:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69bfb926da7ec83fcb766899e6616364 SHA-1: e800a224d07e57650e19474554421025dd71fca1 SHA-256: 42ded83837913f8be68c7db950d3348db3f965552a7cc26cb904ba5741365acc
168 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=witcher+3+open+console'. Additionally, it exhibits a high heuristic for a password-protected archive lure, suggesting the user is expected to download an encrypted payload. The document body, though heavily obfuscated, contains a reference to the same malicious URL, reinforcing the download lure.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=witcher+3+open+console
    • https://cdn.shopify.com/s/files/1/0435/6594/0904/files/conjunction_grammar_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/paxuduzixipozikiwaweno.pdf
    • https://cdn.shopify.com/s/files/1/0435/0532/0088/files/30300892239.pdf
    • https://static.usrfiles.com/ugd/3bca44_5fd84a0516d64ecb993bcc2458c6cdec.pdf
    • https://static.usrfiles.com/ugd/c618e9_c83c6d0813594df1995c546e57286f5b.pdf
    • https://static.usrfiles.com/ugd/9b7d8a_485223cc52af4048b762ac2b92ae911d.pdf
    • https://static.usrfiles.com/ugd/b8c837_79f7511c81a6460597ceabda20b33dc2.pdf
    • https://static.usrfiles.com/ugd/3ab5ed_9291db20c878461cacc70e5a39dbef88.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a5aa4b91117444d966558782b815cbe.pdf
    • https://static.usrfiles.com/ugd/b8c837_e351e3df7bf145329e5c41dbc474af0b.pdf
    • https://static.usrfiles.com/ugd/3f80ec_dfe5728b5a184948b3f9dd52d797617a.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_off00005de9.bin
b1173bacfea3af5f6a439a397b20fa1750e05bc5e9c132b2d778a8b57f0034a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE9 4988 bytes
font_01_sfnt_off00006ee7.bin
d435d0be9b080f41568400f541c5c0a990af0a0d0be4b36fc0e56b3f4ad4e878		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE7 10140 bytes

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