Malicious PDF — malware analysis report

Static analysis result for SHA-256 874790bd97793acd…

MALICIOUS

PDF

51.9 KB Created: 2020-08-30 04:40:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62576f92bbfc1ba151077a9a94517ff5 SHA-1: 5f16f4ba80508057395ee73559a4c6bc6e82e263 SHA-256: 874790bd97793acd4d4b6b2c407ebb007cf6d142ed6efc7450a0acefb79322d8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link is designed to lure users into downloading further content. The PDF also contains a large number of external links, suggesting a link farm for SEO manipulation or to obscure the malicious redirector.

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=flight+simulator+2004+download
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/96895726468.pdf
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/jupobemiferododipefifide.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/game_of_thrones_1080p.pdf
    • https://cdn.shopify.com/s/files/1/0440/2082/6262/files/31212702285.pdf
    • https://static.usrfiles.com/ugd/04e6f9_0dd33f73034b43f8b9a0de60da52d594.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7be3290c59e42d39fbaece658f1d0a6.pdf
    • https://static.usrfiles.com/ugd/b8c837_bec8841ca7bc4414be601f9d0ff2c196.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed2e180409194f98bff96c534e57243b.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d9a077fd06d433392c193ee7a9845e5.pdf
    • https://static.usrfiles.com/ugd/b8c837_d02a41116f164952b86f8f50b2fc6efe.pdf
    • https://static.usrfiles.com/ugd/b0b521_c2d69dd334c24ebdb2db66b2bf0601c0.pdf
    • https://static.usrfiles.com/ugd/b8c837_f23c293ec4514393949cf6601bb91e84.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8f2906ae8a04caa8d393c15974df4cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_4646e54ddc0649e38460ee08418bcde8.pdf
    • https://static.usrfiles.com/ugd/ade4e6_5b47f07adb4a4ccb9dea490a17490254.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_off00008c11.bin
a2639a8c521a594a4828014ef505856a534c0dbd961bd1c0a85ff521bfe772e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C11 5648 bytes
font_01_sfnt_off00009f39.bin
c1efbc6f2bbc7c2faa86c37320c0121e45075fdcaef5a017b9c11c02bad36403		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F39 10316 bytes

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