Malicious PDF — malware analysis report

Static analysis result for SHA-256 266371c3acd39fe0…

MALICIOUS

PDF

51.8 KB Created: 2020-08-30 20:11:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 844132e012936ef5add64e4a699280b1 SHA-1: ca2b40ea8cdeb7e6629d62385070740f1a6cd602 SHA-256: 266371c3acd39fe03f1ffb7cdab623ce58e2e9045b16a644c30cded93c2570f3
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, disguised as 'baby einstein jumperoo instructions'. This heuristic firing, combined with the presence of numerous other links to static.usrfiles.com, indicates a likely attempt to direct users to malicious content. The document body, though heavily obfuscated, contains the lure text and the malicious URL.

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=baby+einstein+jumperoo+instructions
    • https://static.usrfiles.com/ugd/739437_319be81949aa402089dd1b2c238f4c62.pdf
    • https://static.usrfiles.com/ugd/9904c2_de352e49690e4449837a8cb2e2503965.pdf
    • https://static.usrfiles.com/ugd/99965f_c685145a7f4247ac8847fde980a6ce52.pdf
    • https://static.usrfiles.com/ugd/5438e3_f80109a3d9d3480da9dbb8d44915ff1b.pdf
    • https://static.usrfiles.com/ugd/b8c837_778064ffdee04353abbbbfaab9dbc789.pdf
    • https://static.usrfiles.com/ugd/0f5b72_e32f5dcf5bba4d08b94c0a13ea5912c5.pdf
    • https://static.usrfiles.com/ugd/b8c837_749827de5268404b836fd0d1bf8d7952.pdf
    • https://static.usrfiles.com/ugd/d54300_e11860aa9f154fd7b93ba84a8711f0e0.pdf
    • https://static.usrfiles.com/ugd/760101_b4476355b16f411c82624a54235e4e3f.pdf
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/suwefalati.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/konibasep.pdf
    • https://cdn.shopify.com/s/files/1/0427/7665/8087/files/lesibosedig.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/fabunaxujejipagenowiwed.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/mixutegatananal.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_off00008343.bin
5dff97dea7898a2314b122cb4662e9b0e76d9f752a75e3119c7660170cb2de54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8343 5412 bytes
font_01_sfnt_off00009597.bin
9c50abd3a82f594e2aa5ec6baca7e10155f9a1445d3e38974ac41a24bd81ea80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9597 14280 bytes

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