Malicious PDF — malware analysis report

Static analysis result for SHA-256 3545e7f87bd47a4b…

MALICIOUS

PDF

55.5 KB Created: 2020-09-07 21:49:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76eee8d3f2aea87484a615bbb01fad3b SHA-1: d0757fff355f440617883ede80345758e56bc884 SHA-256: 3545e7f87bd47a4bc82cadb76719fd6c95151d0c780a05bb10105f7bcae9a933
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.me/pify?keyword=seiko+chronograph+vintage+manual', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain references to this URL and other benign-looking PDF links, suggesting a lure to a malicious site.

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.me/pify?keyword=seiko+chronograph+vintage+manual
    • https://static.usrfiles.com/ugd/ca9b0a_822f68ba978b4a16adf2e3ae9c443d87.pdf
    • https://static.usrfiles.com/ugd/cc3ca9_7828a68cb07d4d24ac962beeae0173ea.pdf
    • https://static.usrfiles.com/ugd/c33f71_d8243fabc5a848d480118cb89065afde.pdf
    • https://static.usrfiles.com/ugd/278743_a3eb67c7484641af8283500a5e90a3fd.pdf
    • https://static.usrfiles.com/ugd/20d83a_dc6b9a2e320a413dba895e9d246ce2f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_320fc05b690a4259b734d9da7234c625.pdf
    • https://static.usrfiles.com/ugd/115d6e_dd58914e4429468d9b8b2552e46c331f.pdf
    • https://static.usrfiles.com/ugd/2074c9_372660eb787a45b4980e08ee624b8b4f.pdf
    • https://static.usrfiles.com/ugd/3e9e83_119b4b3b3a6d4715aeab3f1dbc23a659.pdf
    • https://static.usrfiles.com/ugd/286fb8_1b306840bdf04b7dba233c24b0e723e8.pdf
    • https://static.usrfiles.com/ugd/43d598_af9875d331624efba045f4a0eeb17f9b.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5eb5ae4d6544599a977c6d99d24de4d.pdf
    • https://static.usrfiles.com/ugd/227d0f_d4f6ed56aadf47269a0a56629fb81c32.pdf
    • https://static.usrfiles.com/ugd/b8c837_32f6563762d24f5e9b8764a9afd3a3ee.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0f6d74d10bc47bdb90ccbb503061549.pdf
    • https://static.usrfiles.com/ugd/9aab09_5fa12a2025dc4604b132f94dacab7720.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_off00009a57.bin
d1c20b3f239ac398ccc62228533afe448b83e99edfe447e238053d5dabff0ee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A57 5396 bytes
font_01_sfnt_off0000ac99.bin
4a337bf30ab3c6f50a7f0147b26b8d9e7ae7afad32a5be17fb1231d19b592469		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC99 10732 bytes

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