Malicious PDF — malware analysis report

Static analysis result for SHA-256 809a68c3df03f650…

MALICIOUS

PDF

58.4 KB Created: 2020-08-29 11:51:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3246ed6478ea059ee5667d8863f70cb SHA-1: 494fb882bbbec9be61b987c65320c654d19e272c SHA-256: 809a68c3df03f6507a8a244b21d8ca895b67cadc2c2625d4a92490b2a4af3265
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is associated with a lure for 'modafinil sans ordonnance', suggesting a phishing or scam attempt. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to 'static.usrfiles.com'. The ML classifier strongly flagged this PDF as malicious.

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=modafinil+sans+ordonnance
    • https://static.usrfiles.com/ugd/b8c837_666dccc875de4a9b890f7e5c2c0f4a59.pdf
    • https://static.usrfiles.com/ugd/b8c837_2308741587624078afb1e30c1397e1a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa7aafbcb43d461aa6d207fbebe1305d.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ac9d0e5cf1f46d081f2ad6ed61f82e4.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5a42b1e2bd64bd5809fbedd7ab6d539.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3356ada8bf9454691d490259e187678.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/68824567379.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/72387977417.pdf
    • https://static.usrfiles.com/ugd/b8c837_26b44f289cf9405e9b6eb01e7ceb64d3.pdf
    • https://static.usrfiles.com/ugd/c1de29_6a8f10671f2146648b767f76bfaa94c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_da2133d936164a218f79a8d2f4a3d882.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/
    • https://static.usrfiles.com/ugd/b8c837_e3356ada8bf9454691d490

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a06.bin
505ff268b911f06bc24a69766627a15036fa7b584d400d866b900c91cba3b8e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A06 5020 bytes
font_01_sfnt_off0000ab2c.bin
bca3ae840a848fbb5689098da2f5a9844a0f50d158a713fea6f1a7aada883690		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB2C 15992 bytes

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