Malicious PDF — malware analysis report

Static analysis result for SHA-256 c61f2b62e3c40a84…

MALICIOUS

PDF

38.5 KB Created: 2020-08-29 04:54:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d3fbf054c396d69a813d845f4b1284c SHA-1: 6c4d2472e82b5f5d9afa860b74442e0cb16067f9 SHA-256: c61f2b62e3c40a84fc7c617593d93002542d0de342ab75e9843b848ec0e118b5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many pointing to 'static.usrfiles.com'. The document body, though heavily obfuscated, also contains the 'ttraff.com' URL, suggesting it's the primary malicious destination. The file's purpose appears to be to lure users to this malicious site via the embedded link.

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=honda+sfx+manual
    • https://static.usrfiles.com/ugd/b8c837_ca6fec6fff4a4f048527095210d21361.pdf
    • https://static.usrfiles.com/ugd/b8c837_cee92d8717b9425ca8309b0d9d641a30.pdf
    • https://static.usrfiles.com/ugd/b8c837_b79a4ddfceea4674a0209aaea407c7b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_83c5d557a7ab4480957e24a19e6cb8b7.pdf
    • https://static.usrfiles.com/ugd/b8c837_51de7105e05e4e798e6da468956b3eb4.pdf
    • https://static.usrfiles.com/ugd/b8c837_cac386c57616490880203ada5fb27431.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54341666742.pdf
    • https://cdn.shopify.com/s/files/1/0430/7157/0069/files/electrical_breaker_types.pdf
    • https://cdn.shopify.com/s/files/1/0431/0591/0935/files/84418292016.pdf
    • https://cdn.shopify.com/s/files/1/0434/7042/2180/files/vefokusejipuxewozozivax.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6965/files/sumunokivowumalubi.pdf
    • https://cdn.shopify.com/s/files/1/0440/7597/4821/files/green_lantern_logo_wallpaper_android.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d38.bin
707f044220626673030db1e929683b7e6be6df4515348478205ae719871ec17a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D38 3312 bytes
font_01_sfnt_off0000591a.bin
718911009657f4f790c81a462f157492cbd9085045bd5ea03e16abf11dabb878		 pdf-font-stream PDF embedded font (sfnt) at offset 0x591A 4984 bytes
font_02_sfnt_off000069fd.bin
860bd22db09a99dacedba4644d101fbdb2371533ab7a224e12df54449acab746		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69FD 10380 bytes

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