Malicious PDF — malware analysis report

Static analysis result for SHA-256 a10d35075ad7b300…

MALICIOUS

PDF

56.3 KB Created: 2020-08-29 08:53:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e5fdb77b78c4a2b8811f9d5411c6c97 SHA-1: d8d0cabedb04aac2d3c700c7e9df88617bfce747 SHA-256: a10d35075ad7b3008a1964b6906a8a913a31c498d86a846ecbc61453191fb0f0
120 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, directing users to 'https://ttraff.me/wix?keyword=sunday+school+teacher+training+manual'. This URL is presented within the document body, disguised as a training manual. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external documents, likely to improve search engine ranking or distribute 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.me/wix?keyword=sunday+school+teacher+training+manual
    • https://static.usrfiles.com/ugd/b8c837_ebfe0ad6af954e3d9edbbeae7597972c.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fdb069ff4f04dcbb37ab1446f3308e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc2c3690156841729add3e999934dfc9.pdf
    • https://static.usrfiles.com/ugd/b8c837_085437aa8ead483f82bd694a5c504171.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/10686667182.pdf
    • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/375705477.pdf
    • https://cdn.shopify.com/s/files/1/0431/5349/0074/files/gekizusekas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/varanomavumozomadeda.pdf
    • https://cdn.shopify.com/s/files/1/0429/3686/0839/files/wysiwyg_web_builder_templates.pdf
    • https://static.usrfiles.com/ugd/b8c837_fafa41c826854254940890c10bed8360.pdf
    • https://static.usrfiles.com/ugd/b8c837_45f7ed31920c4654a82a8a0a1d4fe854.pdf
    • https://static.usrfiles.com/ugd/b8c837_00fd6fd250e344899e16bdf1cfbd0b62.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_off00009e13.bin
abd2532087e63e66be1dbbc803c3081d6916a175886b9abf695b50bbb270abf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E13 5560 bytes
font_01_sfnt_off0000b0cd.bin
39cffa8efd167944d40dea7720a5f9f6a71c3c031947dca6a2c2f3bcca458ca2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0CD 10352 bytes

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