Malicious PDF — malware analysis report

Static analysis result for SHA-256 9300af912ddff0fa…

MALICIOUS

PDF

55.7 KB Created: 2020-08-30 18:09:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 001587cde97dd2d35224cc85e98a2195 SHA-1: e9960a6a48a750dec14e2bbace760c2198c47741 SHA-256: 9300af912ddff0fa8553b9ffeb2a1211a0e8b6639880b22324ff45903af8748c
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 'https://ttraff.link/wix?keyword=libro+paulo+coelho+pdf'. This link is part of a link farm designed to appear as book downloads, a common social engineering tactic. The PDF also contains numerous other links to external PDFs, further supporting the link farm heuristic. 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.link/wix?keyword=libro+paulo+coelho+pdf
    • https://static.usrfiles.com/ugd/b8c837_bad49abe751b4e6fbf4d31c8e0ebd9e1.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9f6869b972445329dbd2fbf0133938f.pdf
    • https://static.usrfiles.com/ugd/b8c837_6b6aa1f6836a47dfb7b7df5241736d61.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f4f8c30bc434cc4970cbe52abca9738.pdf
    • https://static.usrfiles.com/ugd/e643da_c7dba22515094fc6a591fc79f406303a.pdf
    • https://static.usrfiles.com/ugd/b8c837_9af3265543474d41b4bdf191b94d007a.pdf
    • https://static.usrfiles.com/ugd/b8c837_153e1287329848209452019ea5d5b110.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c29e3d0697846adb9f06de7e5baf2bc.pdf
    • https://static.usrfiles.com/ugd/865d50_0aac886fc3304f00a64deb8400030915.pdf
    • https://static.usrfiles.com/ugd/eed56f_23cfc2159cd94f0a91677472154ea381.pdf
    • https://static.usrfiles.com/ugd/b8c837_cfe2ad1adfcd4f928cdced644920cae8.pdf
    • https://static.usrfiles.com/ugd/191a6d_06316f427152493f8eb60e5d000e8740.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4391f989f0747ad83aa98cfd1849e2a.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_off000092e6.bin
5678a6c067f05d95ed00308d65f3f6ef091d30795adbfc9076d6b3007a23c28c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92E6 5144 bytes
font_01_sfnt_off0000a452.bin
689581e006f238c978732c4cb68a29ad0484b23e9073d8354f407c8a129d32d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA452 14632 bytes

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