Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eca8fa56fb98058…

MALICIOUS

PDF

41.3 KB Created: 2020-09-04 15:51:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aec89e86a02cafe72def6efc56c15a64 SHA-1: 815ba62d37e416f4b3551dcb033963511bc91c8c SHA-256: 9eca8fa56fb980588dac9a3a4ccdeb865bdcfe691fe8139257700f7502734c18
150 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.me, which is disguised as a manual for a security system. This redirector likely leads to a further malicious payload or phishing page. The PDF also contains a large number of links to external PDFs hosted on static.usrfiles.com, suggesting a link farm or SEO poisoning tactic to increase visibility of the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=cocoon+8+camera+security+system+manual
    • https://static.usrfiles.com/ugd/b8c837_58c0e2677d264bdfb97c9b6145d5f366.pdf
    • https://static.usrfiles.com/ugd/1f2646_433caf81e2974691a39d1dd5bf9531ac.pdf
    • https://static.usrfiles.com/ugd/27135d_43a5240fd88a4bccbc795ed6575838f1.pdf
    • https://static.usrfiles.com/ugd/756799_f88afa70aceb43a6a1049f6519f53ef8.pdf
    • https://static.usrfiles.com/ugd/b7ab08_99079f18993245eab3096acaf4818d19.pdf
    • https://static.usrfiles.com/ugd/6cabbb_7888266956d6482f88566fc50f09d2a5.pdf
    • https://static.usrfiles.com/ugd/191a6d_b038fee3af1e4d7cb5129cbbb6725919.pdf
    • https://static.usrfiles.com/ugd/ecec20_e78e1164c2e9450e95ef03675eceb05b.pdf
    • https://static.usrfiles.com/ugd/7836c9_374d3116130b40f3ad97f21506a02cd9.pdf
    • https://static.usrfiles.com/ugd/73f3b0_cfbfe57b8708461aa3280b341ce76eef.pdf
    • https://static.usrfiles.com/ugd/aec2ea_e5c05de8ebae45189ce8be33ebce9d43.pdf
    • https://static.usrfiles.com/ugd/c3f59f_a9168a7a1f874a5db3996658a7c7e96f.pdf
    • https://static.usrfiles.com/ugd/4117a9_ab53811de37e448cac0eee8803ce6364.pdf
    • https://static.usrfiles.com/ugd/4bdc6d_598fe9150f8c4cdcb61f571ae1ebbec6.pdf
    • https://static.usrfiles.com/ugd/f84671_2244f850274f486cb49f72a576f19170.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_off000059bc.bin
5e6173a5294df0e3b9cd0096ecec9d9ad4b6fa08b053080909e49f0ba89d1eef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59BC 5144 bytes
font_01_sfnt_off00006b26.bin
570d4c63ca743e9c8ffb2bcba3eb494062d020c9749773dfcc6189a2b7e830e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B26 14124 bytes

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