Malicious PDF — malware analysis report

Static analysis result for SHA-256 cadeb4e0e81cf42a…

MALICIOUS

PDF

49.4 KB Created: 2020-09-04 23:37:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c80b0d0272bf54c04ad5c39fcd7c1f4 SHA-1: 0dd8bbf8b043cd5917a751c0a443eed07e6e5c02 SHA-256: cadeb4e0e81cf42ac6c97c2f2bef3b1e8c1144905a194ff110bcfd4103a59546
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'graphic design pdf portfolio dimensions' and a URL that matches the malicious redirector. This suggests a social engineering lure to trick the user into visiting 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.club/wix?keyword=graphic+design+pdf+portfolio+dimensions
    • https://static.usrfiles.com/ugd/ca32a8_f90f9a3d82b947c8ad512d0ddff27633.pdf
    • https://static.usrfiles.com/ugd/b88e3d_d03ef76e19ef437fb6008cd33900b65c.pdf
    • https://static.usrfiles.com/ugd/c63dba_5e5c42783da949819c183718e8604ec2.pdf
    • https://static.usrfiles.com/ugd/67f5f7_1e32328203e5435a8fe81f2d91da6da7.pdf
    • https://static.usrfiles.com/ugd/4d6844_ad48ce68b59a4c5d85ca00228853b517.pdf
    • https://static.usrfiles.com/ugd/a1fb72_230cb8a3a0d1485f9e74357952f3a571.pdf
    • https://static.usrfiles.com/ugd/b8c837_fad2644dde6c416dadeb2f417ec578bd.pdf
    • https://static.usrfiles.com/ugd/58a813_340bf66c3bd6450cbef7959956ba1883.pdf
    • https://static.usrfiles.com/ugd/822ecd_e7c1ea154c434967add847e1f5a0b376.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_88c52c6767574ae5b3755e5e010b6337.pdf
    • https://static.usrfiles.com/ugd/f34823_d6fb043b002049079835e387cb5a63a4.pdf
    • https://static.usrfiles.com/ugd/3b5dd9_b1712a9dc9974eefa1f8ad68ad19fff0.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007579.bin
92f33ba1d6d7f11e514407830f275c98856e95e35172abaa1c9c362b4d7d7c0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7579 5388 bytes
font_01_sfnt_off000087a0.bin
912fd75e7ddeb15d3f37bf29e4341d5578703a77202749e7710260961f75c62a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87A0 10272 bytes
font_02_sfnt_off0000aab7.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAB7 4324 bytes

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