Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2fccd4a36ab1a79…

MALICIOUS

PDF

39.0 KB Created: 2020-08-31 10:33:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8f360469841593bcb3c98f8ea50c54a SHA-1: 1ae7e247f6d8b63102862ffc0dc1699ea0ea6dbb SHA-256: b2fccd4a36ab1a7957390a1350e5c4726d8322f41f181bbeab131b6fca02c133
150 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector URL, suggesting a phishing or social engineering attack. The document body, though heavily obfuscated, contains text related to 'Florida eviction notice pdf' and the malicious URL 'https://ttraff.cc/wix?keyword=florida+eviction+notice+pdf'. The ML classifier also flagged this PDF with high confidence. The primary attack pattern involves luring the user to click on the malicious link.

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.cc/wix?keyword=florida+eviction+notice+pdf
    • https://static.usrfiles.com/ugd/76b6de_5ee27193678d4e2b84f12d822997e6b0.pdf
    • https://static.usrfiles.com/ugd/09c3c7_3506531a63cf4d8c8e3a36f698cf05c6.pdf
    • https://static.usrfiles.com/ugd/99afdc_d9fb4945e967480b950057e26068330f.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a8e8b88ce3f42ecaa4fc7149577fd9a.pdf
    • https://static.usrfiles.com/ugd/625844_8979d494700e4923a6d48b71cfc78629.pdf
    • https://static.usrfiles.com/ugd/e1d12c_4524233c5c90451698f0fdb841501a4c.pdf
    • https://static.usrfiles.com/ugd/09c3c7_e7aa762bd44b4723a77db2a1995a98b5.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ed2b38c3dc44d06acc5b060760ecce2.pdf
    • https://cdn.shopify.com/s/files/1/0428/1414/4675/files/bstc_paper_2020_answer_key_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/1674/8188/files/jeropefig.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5348/files/linev.pdf
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/62787541417.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0025/files/ponopolikepevunuve.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_off00005c12.bin
aac7020f1073b9027699c1f28cafdf60f5b0f48cb44f508d1cd9f3013f572980		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C12 4988 bytes
font_01_sfnt_off00006d20.bin
26a4d4c952664805ecadff5e6303976b8b9d71e4f3035b806d4afad945076cf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D20 10488 bytes

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