Malicious PDF — malware analysis report

Static analysis result for SHA-256 87b39b8abccc70f9…

MALICIOUS

PDF

45.5 KB Created: 2020-08-31 09:20:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 858ffb3760ee5520e641658f9b891989 SHA-1: 7eb4e67371021c9fc71d01f921c4d25c7ae667cb SHA-256: 87b39b8abccc70f97fe85df755a2aebbb886b28aefe7267250724c2414967703
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The embedded URL https://ttraff.com/wix?keyword=boy+scout+scouts+own+service is the primary indicator of this malicious redirection. Additionally, the PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger effort to generate traffic through numerous linked PDFs, with https://static.usrfiles.com/ugd/c068f8_6de0655dfd15429680a360b7f5b1a9e9.pdf being one example.

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.com/wix?keyword=boy+scout+scouts+own+service
    • https://static.usrfiles.com/ugd/c068f8_6de0655dfd15429680a360b7f5b1a9e9.pdf
    • https://static.usrfiles.com/ugd/58a813_c47e73b360c54727838cd30529d7b69e.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa32e7286ed54b8caacc51df05390803.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c30be4bc93049b48aca438e8d593c9a.pdf
    • https://static.usrfiles.com/ugd/162fe6_2b6c8580afc641409f0f064dbfa5d47f.pdf
    • https://static.usrfiles.com/ugd/26938b_27e4bf9b20e549fc9fcbb06da1eea518.pdf
    • https://static.usrfiles.com/ugd/269bb8_fbdd9d8f039646e8b213cb7c0de81224.pdf
    • https://static.usrfiles.com/ugd/4479ed_5f6298e7e6fd44aca53ad7c30921c974.pdf
    • https://cdn.shopify.com/s/files/1/0429/5737/3589/files/74824140064.pdf
    • https://cdn.shopify.com/s/files/1/0428/1679/8886/files/vuvujifapi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3164/1762/files/xipexa.pdf
    • https://cdn.shopify.com/s/files/1/0428/7492/9319/files/tanasorutosugakunotozavud.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96226605796.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_off00007466.bin
23d6c3f3804f1c9c5bb21d9d140a88f262aa095aea839acffc29914dc909ec80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7466 4856 bytes
font_01_sfnt_off00008516.bin
1fe26cc3aa16a27fef0dd231ae87eed121ea052105e812abad1961fc898e2cca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8516 10444 bytes

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