Malicious PDF — malware analysis report

Static analysis result for SHA-256 abfc5c07511a4395…

MALICIOUS

PDF

42.2 KB Created: 2020-08-30 20:01:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89fbf266c54c1be45a8fdfd97830b1f8 SHA-1: 54e2325c2a4d64b714893112d14c56c9a4389663 SHA-256: abfc5c07511a4395bbb138b01a8ff0f480f71ec56c18bd865d4a86c86b9d21e4
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to a clinical psychology history form, suggesting a social engineering lure. The primary malicious URL identified is ttraff.cc, which is used to redirect users to other potentially malicious content. No scripts were extracted from this sample.

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=formato+de+historia+clinica+psicolog
    • https://static.usrfiles.com/ugd/b8c837_7c5a5f1c004b43e59988ca5e22f8c7ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_83a6177815bb45f1bf535570ea7ac4f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_693ee6fde0234f50981d66cb7a8eb40f.pdf
    • https://static.usrfiles.com/ugd/3bf302_b60ec6c630364fe7b0402d300ecf420f.pdf
    • https://static.usrfiles.com/ugd/de65f7_d1bc7c5dd4284875a5cef9f17af6c5d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_a87f3a1e86b047a29fc930a9d4ecd5e2.pdf
    • https://static.usrfiles.com/ugd/47b1e8_2eb5fe138a3b4c2f928f06c0cc92ca43.pdf
    • https://static.usrfiles.com/ugd/b8c837_2cce5fc364844c828ead48127fa3a40c.pdf
    • https://static.usrfiles.com/ugd/50c35f_0faee73776714e75ad7778a43bc4a764.pdf
    • https://static.usrfiles.com/ugd/1decf9_16acaca351334f6aac58bd95a1ad6da6.pdf
    • https://static.usrfiles.com/ugd/f65518_3a0d63498a5f43b6aa57539e709440a7.pdf
    • https://static.usrfiles.com/ugd/eda9ba_9b1ab06fc2e34377a0eb226d7044e8be.pdf
    • https://static.usrfiles.com/ugd/c7a620_0d9e34af7241411aae89f0da7ba1293d.pdf
    • https://static.usrfiles.com/ugd/d01287_839f615b50cd49e697e559be17eb332a.pdf
    • https://static.usrfiles.com/ugd/ae15ca_34c1f9a40c634d9399a088d39cb476e1.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0b5ff1970514d519f44d030132db0d9.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_off000064b2.bin
edd45acc261cc03b8cfd287a5a5de350850d9ebbc0b1767a70e909c6695995d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B2 5444 bytes
font_01_sfnt_off0000770f.bin
bf5054e97e396179d8c5d77ddeadeb40589af17031fcde9c9e6c27e733ad52f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x770F 10908 bytes

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