Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a74c9289572a229…

MALICIOUS

PDF

52.6 KB Created: 2020-08-29 21:13:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 632be010ae2472e5d4302363e522ef7f SHA-1: 3578f3feaa775fe66616e129f38817ec85247908 SHA-256: 4a74c9289572a229cfd68ff3f597775f80aba4e5022dd193908d24095eaf918f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.ru/wix?keyword=philosophy+a+text+with+readings+manuel+velasquez', is the primary indicator of this malicious activity. The document body, though heavily obfuscated, appears to contain this URL, suggesting a social engineering lure.

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.ru/wix?keyword=philosophy+a+text+with+readings+manuel+velasquez
    • https://cdn.shopify.com/s/files/1/0432/3731/0632/files/lowercase_abc_tracing_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/89009175671.pdf
    • https://cdn.shopify.com/s/files/1/0431/0594/3701/files/jaluzukagererewupix.pdf
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/chrysler_sebring_2004_haynes_manual.pdf
    • https://cdn.shopify.com/s/files/1/0459/2238/6069/files/25066745839.pdf
    • https://static.usrfiles.com/ugd/b8c837_35f541860a7a4d03b64aaf45e2b94f5f.pdf
    • https://static.usrfiles.com/ugd/b8c837_c5c203be6fd04277a123e4f82d50e7ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_f01af733c58e4aa88c4ad5656da32729.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0045a5acf644ecd8e81c7dd61163492.pdf
    • https://static.usrfiles.com/ugd/b8c837_c190b3b27dab4bada50a12c720818191.pdf
    • https://static.usrfiles.com/ugd/b8c837_190d8abef2c64a88b1d03a9bea354686.pdf
    • https://static.usrfiles.com/ugd/b8c837_821648b7c17e4019bf625a92ac4bc5d1.pdf
    • https://static.usrfiles.com/ugd/b6edda_2015db672acf47589a13a73ffc081bea.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/
    • https://cdn.shopify.com/s/files/1/0432/3731/0632/files/lowercase_abc_tracing_w

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d47.bin
921812048265de7d0d96c70e0eaa9efb4fdc6b1e3d6b2edd5c508ac04d636ba0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D47 5872 bytes
font_01_sfnt_off0000a134.bin
ab362b5498cc6aecebd919bfbda524c7f84cffe769f873e4bf551f4fb911370d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA134 10612 bytes

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