Malicious PDF — malware analysis report

Static analysis result for SHA-256 e578ecfc7c8d4564…

MALICIOUS

PDF

41.3 KB Created: 2020-08-30 03:48:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d17e75d8d015ac048fd05a5c3bf0e84 SHA-1: f893933ba0e1e4e601ba85e9404a814360f295e4 SHA-256: e578ecfc7c8d4564ec1b85b5adad33f86add0c8e5c9bc4ea8e16c7f3197f1131
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a large number of external links. One of these links, 'https://ttraff.ru/wix?keyword=the+mother+of+the+reptilian+sacrifice+osrs', points to a known malicious redirector. The document body itself appears to be obfuscated or corrupted, but the presence of numerous links, including one to a malicious redirector and a link farm, strongly suggests a traffic-driving or SEO spamming attack pattern.

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=the+mother+of+the+reptilian+sacrifice+osrs
    • https://static.usrfiles.com/ugd/d54300_47da57241c6149b89a9c19185ca8d231.pdf
    • https://static.usrfiles.com/ugd/b11f6d_c066edfc16da47f089d3e002f21671b7.pdf
    • https://static.usrfiles.com/ugd/87b9a8_69adce3cf2e145d5a8aff6b764a8bc1a.pdf
    • https://static.usrfiles.com/ugd/4dd980_e95c3a61c544407492027d04ba758378.pdf
    • https://static.usrfiles.com/ugd/b8c837_8295da48881c428cb93d8b78ba380479.pdf
    • https://static.usrfiles.com/ugd/a43ec6_b56bfa2222304d43b8ae78df8daf0e89.pdf
    • https://static.usrfiles.com/ugd/590778_ec91d62bd7b14328a93444877ff82b28.pdf
    • https://static.usrfiles.com/ugd/2c608b_166abe402a934ea4913f3625918fed06.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_off000064af.bin
d354cd849b1a15cd7dce294cd9d0696290e02194281a060e1d4fe6fca1314e1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AF 5204 bytes
font_01_sfnt_off00007639.bin
a8cb5b00fb2b3b0dc65236fafaf377124e618f960c461df32a8c2d60494a6765		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7639 10304 bytes

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