Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5433442dd9445d1…

MALICIOUS

PDF

51.6 KB Created: 2020-09-02 04:21:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3a58a8b9702c61a3a1f5411f0d7c382 SHA-1: 2d0fa8368586a43aca767296f6235df3f6aab296 SHA-256: f5433442dd9445d1e9b7a26de5121e4d5326ac1aa568d4c2d92bf21af3fecfa4
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector URL embedded. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link https://ttraff.me/wix?keyword=emergency+preparedness+and+response+procedure+template leads to known malicious infrastructure. The document body, though heavily obfuscated, contains this URL and other links, suggesting a social engineering attempt to redirect the user to a harmful site. No scripts were extracted from this sample.

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.me/wix?keyword=emergency+preparedness+and+response+procedure+template
    • https://static.usrfiles.com/ugd/0f5b72_f7e1015cef9a470d9581543944e8ac41.pdf
    • https://static.usrfiles.com/ugd/d4da64_b4eb6146c65244abba43e2803a2931b7.pdf
    • https://static.usrfiles.com/ugd/880a7e_34414c41a5f44f7d82d4d0dde37ddeca.pdf
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/saunders_veterinary_anatomy_coloring_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/kitijulakezafajomolu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8341/3142/files/competitive_book_of_agriculture_free_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d0110ccc70e491da8c19d887a9b0a4b.pdf
    • https://static.usrfiles.com/ugd/99a8f2_dc1cadfa79cf425d8165c61fbc68481f.pdf
    • https://static.usrfiles.com/ugd/39cb9d_e02c7ac3b7764d419fe5b4bb92e27321.pdf
    • https://static.usrfiles.com/ugd/b8c837_312c61ac89ca49ccbceb7848eeac4f2c.pdf
    • https://cdn.shopify.com/s/files/1/0438/3506/4480/files/define_transformational_leadership_style.pdf
    • https://cdn.shopify.com/s/files/1/0429/5698/0377/files/66065964077.pdf
    • https://cdn.shopify.com/s/files/1/0434/6042/7928/files/kudulefe.pdf
    • https://cdn.shopify.com/s/files/1/0434/1651/8806/files/webpack_4_sass.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3028/files/riwiwefudoze.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f31.bin
b6d0630bdaf964c15330649a3c5ae445f87d98d74710df6b577627cc1db22ce0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F31 5288 bytes
font_01_sfnt_off00009111.bin
79e86c0f96278ff7cea282ee52fcc525e6617667d1ed52b8def182b4fad7b413
pdf-font-stream PDF embedded font (sfnt) at offset 0x9111 9768 bytes
font_02_sfnt_off0000b283.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xB283 4324 bytes