Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc9e228d6937008…

MALICIOUS

PDF

43.8 KB Created: 2020-09-04 21:00:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e25352c734cf73fb5a12a2a38ab0980 SHA-1: f54eaa01c56c361c88d72a60cccce2b4d0b4ab23 SHA-256: edc9e228d69370085828769140dd0017eb8d66def825d1c0cf37fbd5fab700f8
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a redirector URL, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the target URL and a Thanksgiving prayer theme, suggesting a lure. The ML classifier also flagged this PDF with high confidence. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.club/wix?keyword=guideposts+thanksgiving+prayer
    • https://static.usrfiles.com/ugd/b8c837_30a319ecbfb8443d8351d97a3c243ee1.pdf
    • https://static.usrfiles.com/ugd/599026_93e1de43c2b2466c8a402ff8cb01924f.pdf
    • https://static.usrfiles.com/ugd/b4f0c6_6170ad646fa94455a7b3208532759de9.pdf
    • https://static.usrfiles.com/ugd/b8c837_960112edbdbf4e43a1dc4431a4aea00f.pdf
    • https://static.usrfiles.com/ugd/83b1b3_0a6de289d52947a395858c5a73a994fa.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_6ade3eb165b2434487f5ad61bd168a6a.pdf
    • https://static.usrfiles.com/ugd/f63f29_9746464a9fe747a28c8d930cea0a44f9.pdf
    • https://static.usrfiles.com/ugd/eb4c03_ed351a080eec4593bbdfea98559454ed.pdf
    • https://static.usrfiles.com/ugd/e8506d_263d9e6d830447dabd2836ee53ed9584.pdf
    • https://static.usrfiles.com/ugd/d32f78_2436c816a7a44b86990051c0d5c6fcf0.pdf
    • https://static.usrfiles.com/ugd/e7e4a0_b71b5a744d334d57b1a40eaf89c42d5e.pdf
    • https://static.usrfiles.com/ugd/2f3216_aaa2656fca5849c9aa7f2641a57844d7.pdf
    • https://static.usrfiles.com/ugd/1df9ea_a2fbb568d01e4a3b934bf8f5d21f61b5.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7d06ffd7ee54146a207f73ea5f90603.pdf
    • https://static.usrfiles.com/ugd/48f461_c5a935c37bd443b4b98dae3784e0a875.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_off00006ccc.bin
9ebeceb6178d771a285f4a85705809464e48e4199df97ce91eceae805e7ff797		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCC 5448 bytes
font_01_sfnt_off00007f5d.bin
3c5285dbb1717869479969641147c64f02bd69549cc9d795f84dce199b952d21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5D 10316 bytes

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