Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed5c0795808c6ce8…

MALICIOUS

PDF

41.2 KB Created: 2020-08-31 01:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a05dca157eb83cd9cb9acbc6c8bfad08 SHA-1: e474bc33d232b3abfbd31e46ef48cbded40e4fed SHA-256: ed5c0795808c6ce8ca07b287c204bc41321e5ebd5e56233e3359d13ec5a2eeaa
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The PDF also exhibits characteristics of a link farm, further supporting a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=which+ravnica+guild+are+you
    • https://static.usrfiles.com/ugd/55f640_454655322db34a4f8175f7539f30c90a.pdf
    • https://static.usrfiles.com/ugd/6116da_a39dcee9a0d34356b1e6dc4c365ffa8d.pdf
    • https://static.usrfiles.com/ugd/e2c250_e8b10d9551784051883d4e772af574ec.pdf
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/37745837753.pdf
    • https://cdn.shopify.com/s/files/1/0430/5246/6325/files/82026275540.pdf
    • https://cdn.shopify.com/s/files/1/0428/7702/6463/files/82791368003.pdf
    • https://cdn.shopify.com/s/files/1/0430/7451/9194/files/59526028683.pdf
    • https://cdn.shopify.com/s/files/1/0431/1678/9927/files/wixoxifununana.pdf
    • https://cdn.shopify.com/s/files/1/0440/7197/7110/files/b._ed_books_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/niteditigigomerisuzi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4641/1162/files/womegajo.pdf
    • https://static.usrfiles.com/ugd/3be3a7_51594c2920294f5f91300369e68c951a.pdf
    • https://static.usrfiles.com/ugd/cafc24_ec0e6832644c4c53a6b0f43ad67a3d83.pdf
    • https://static.usrfiles.com/ugd/7598fa_110e6b19a4b9419487ae7bf93dff4f92.pdf
    • https://static.usrfiles.com/ugd/d1c05f_27aa9b839f6d42cfa15e120eb46a8e52.pdf
    • https://static.usrfiles.com/ugd/b8c837_5174e7def6a94be988f14b32e2cadd09.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_off000061d7.bin
fae0a4c3c32f68f52be29dcb3e13cedf3558fd1ea5cba97799c7d1ec377a627d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D7 5196 bytes
font_01_sfnt_off00007388.bin
8661e34640535138968ac1f5f1b94899c34d20fadf379e2f4c56e40b8820df47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7388 10624 bytes

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