Malicious PDF — malware analysis report

Static analysis result for SHA-256 54f7827fe4e00d8d…

MALICIOUS

PDF

118.4 KB Created: 2020-09-02 18:45:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44cde0e1b9e1b3cb7efec7083beb9807 SHA-1: 0040e2be2f85fabb8bd735aeac513692038a177a SHA-256: 54f7827fe4e00d8d8840790aaba40203de9bfae4453ddcbbd83978a3b3ab6e7a
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a search result for 'stonehenge guided tours tripadvisor'. The PDF also hosts a large number of external links, many pointing to static.usrfiles.com, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The document body is heavily obfuscated but contains 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.cc/pify?keyword=stonehenge+guided+tours+tripadvisor
    • https://static.usrfiles.com/ugd/b8c837_54174a709f984c2095b8e28430d22a9e.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e0839b1a2534d9abba6fd66bce1cfb6.pdf
    • https://static.usrfiles.com/ugd/8dde66_db8c508ef5cc46d8b9c60dfa48d63e57.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/36113847260.pdf
    • https://cdn.shopify.com/s/files/1/0464/7242/9718/files/kowumavixaza.pdf
    • https://cdn.shopify.com/s/files/1/0437/6395/7909/files/financial_accounting_libby_9th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8206/files/85515154972.pdf
    • https://cdn.shopify.com/s/files/1/0434/3654/0056/files/zigukapejoj.pdf
    • https://static.usrfiles.com/ugd/9219f8_968d18381e5e41ac82a2940d3895a4da.pdf
    • https://static.usrfiles.com/ugd/e4a001_36861fbb559b465e80ee562bfe231ff1.pdf
    • https://static.usrfiles.com/ugd/ce5d00_a8e3d4f5bcdb4e0b9c7ebe73064c77b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_d959ab4ea29e44358bc3c9c5325339e3.pdf
    • https://static.usrfiles.com/ugd/b444d4_80deafd7229b4d86843c35e0ecb84b6b.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_off0001956c.bin
d40424504598adb9b860d4a79745476a351fb21a04910a63f091b6435d61d118		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1956C 5352 bytes
font_01_sfnt_off0001a7a0.bin
bdccc17db269f4fae3c3fc493c9d9629e0a1f66af8f052a0de2604fc196fdaa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7A0 10736 bytes

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