Malicious PDF — malware analysis report

Static analysis result for SHA-256 24fd3d25a1705b51…

MALICIOUS

PDF

35.0 KB Created: 2020-08-30 16:17:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c40c00b151f7cc14890736222e5c006 SHA-1: e2e6f31c5785db6cf6d00d321540fc83e67488db SHA-256: 24fd3d25a1705b51bd7980933b804b26f228df11304707e10815c95d65d5a214
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious sites. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, suggesting a social engineering attempt to trick users into clicking malicious links.

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=boat+captain%2527+s+log+book+pdf
    • https://static.usrfiles.com/ugd/0c4177_f5badca0b8e247da9b8f2114ade68354.pdf
    • https://static.usrfiles.com/ugd/b8c837_7e6aea36c5cd4d009ef0b9ffa9e8055f.pdf
    • https://static.usrfiles.com/ugd/4b68be_4f79ce36d92e47a1ad9aececc50be224.pdf
    • https://static.usrfiles.com/ugd/b8c837_32d47a91b14d43c08ea441775ec92836.pdf
    • https://static.usrfiles.com/ugd/e6092c_8955a559597f4cfd86dfe0fcf5226961.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/psychological_perspectives_on_the_self.pdf
    • https://cdn.shopify.com/s/files/1/0433/0012/6885/files/fairfield_county_ohio_accident_reports.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4562/files/liwaxaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/8253/8403/files/93256476909.pdf
    • https://cdn.shopify.com/s/files/1/0440/3265/5525/files/xetinajugoxagerogaxul.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9219/files/amma_feeling_songs_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0428/0818/0895/files/baponigetetajisajug.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/the_sniper_liam_oflaherty_sparkno.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_off00004ce4.bin
e7568a74395cfc371b812e2d1102b2054cf96a0f11e8aa4dc43e0e8bd441ea65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CE4 5512 bytes
font_01_sfnt_off00005faf.bin
e5ef54dc0830b8eccf96c4ddafc7bd12428b3c0e39610b2f243f32feee864e02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAF 9260 bytes

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