Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4febf74a84e6808…

MALICIOUS

PDF

38.1 KB Created: 2020-08-31 17:39:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2b869ba2f1e09f676892d33ee969795 SHA-1: 90891dcdcab478bbf8ddad6e85284ef9c5976ac6 SHA-256: f4febf74a84e68086881591d2484f29e890de60c64382eec9ff775da4a3bb01b
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. This URL is presented within the document body, disguised as an admission form, to entice users to click. The PDF also contains a link farm heuristic, indicating a large number of outbound links, many of which are to benign Shopify domains, likely for SEO manipulation. The ML classifier strongly flagged this PDF as malicious. 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.cc/wix?keyword=m.+ed+admission+form+uos
    • https://cdn.shopify.com/s/files/1/0435/1570/7551/files/plazma_burst_2_game_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/0332/2269/files/airline_airport_codes.pdf
    • https://cdn.shopify.com/s/files/1/0431/6699/0498/files/zojat.pdf
    • https://static.usrfiles.com/ugd/451461_0486fe234142410d9679792bea90b16d.pdf
    • https://static.usrfiles.com/ugd/917232_0f7cbd515c724b14924351046d6e6ef7.pdf
    • https://static.usrfiles.com/ugd/c1de29_64736b6a97944d12be166847818d7bd3.pdf
    • https://static.usrfiles.com/ugd/8127dd_148e90437d46407ebf3a022441b9c8d1.pdf
    • https://static.usrfiles.com/ugd/625844_be504969a5c94d228f7d2ec6f5be3e9b.pdf
    • https://static.usrfiles.com/ugd/5ad03d_1cd06ee256e44f09aa1bf2e792ecc73b.pdf
    • https://static.usrfiles.com/ugd/ecec20_60d2103a3b56470cad721b83c91d485f.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/bedox.pdf
    • https://cdn.shopify.com/s/files/1/0434/1461/8277/files/49425604989.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12086745869.pdf
    • https://cdn.shopify.com/s/files/1/0437/3816/9498/files/94520244413.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_off00005879.bin
ec6f27cf4bc886dbb396cc1a54e7b76c1bb90fae5d111c253b4f5e8e524b94bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5879 5056 bytes
font_01_sfnt_off000069a5.bin
06377072a723cff2293654fef2c75fc5dda72925aeee9eb01928e8c360fda6c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69A5 10012 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.