Malicious PDF — malware analysis report

Static analysis result for SHA-256 891e63e1f4acfe3e…

MALICIOUS

PDF

43.0 KB Created: 2020-08-30 23:12:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 640eeed7a0541d174cb0f31d4461541c SHA-1: 9bc38f44615ea6aa49ca369bf4125d0b488a5748 SHA-256: 891e63e1f4acfe3e4798134116c80fbca72fcb6a964c71e8db1abfbe22b0a47f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=watch+pokemon+season+22+online+free'. This URL is presented within the document body, suggesting a lure to trick users into clicking it. The file also exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, many hosted on 'static.usrfiles.com'. The primary malicious URL is the most critical IOC.

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=watch+pokemon+season+22+online+free
    • https://static.usrfiles.com/ugd/09c3c7_308b4059bfff47a5ae44bdf5feb337ed.pdf
    • https://static.usrfiles.com/ugd/b77b08_e0302c20a5f94cb6822190c9a749b088.pdf
    • https://static.usrfiles.com/ugd/0a052f_e24fbc37568e48d08def972519522379.pdf
    • https://static.usrfiles.com/ugd/b8c837_0575b038a9734f3d914b65e489cd4a48.pdf
    • https://static.usrfiles.com/ugd/b8c837_01688f4ef31b44a4a646742d57f87cd7.pdf
    • https://static.usrfiles.com/ugd/d78803_005ba72b9bff4a3f9e6c793370d5842b.pdf
    • https://static.usrfiles.com/ugd/b8c837_66def0301fec4b8982a9bcd60fb46537.pdf
    • https://static.usrfiles.com/ugd/1be480_a4a987c99f044920b1e56d9d42dce80d.pdf
    • https://static.usrfiles.com/ugd/98857b_944a92a0d83748f1b8322f804db873a9.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zobirunutopuwipigodilig.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/unearthed_arcana_fighter.pdf
    • https://static.usrfiles.com/ugd/5360f8_6bb1ae00ac144fe6b03bd15aa929e6cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ac059802fc34f08872ac0a45fc587c4.pdf
    • https://static.usrfiles.com/ugd/097bd5_5205a4bdd49f4b0dabff3cd4148a0745.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d398b0f79434bf4ac344646bc9b8364.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_off0000687c.bin
d6607a8fbbf65df74ca859665442aaa04bb9591aef751dbf8db05e5f48b6c5c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x687C 5464 bytes
font_01_sfnt_off00007afc.bin
99a0cd3868d10d3217d532e1d7cbd57d29d313a0ac95edd03b75f0baac0d3dcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFC 10600 bytes

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