Malicious PDF — malware analysis report

Static analysis result for SHA-256 f01c7d8e4cf1da79…

MALICIOUS

PDF

40.1 KB Created: 2020-08-29 11:56:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4904c268da3cd8279f19e9b48223e1a6 SHA-1: b13315b8fc8a83e4152113c7e14bc569b9b5729d SHA-256: f01c7d8e4cf1da79f2b6600313eb3a4f5d4015f0d63f71eebc5a2c9017ef1b03
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking URL, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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.com/wix?keyword=lineas+imaginarias+de+la+tierra
    • https://static.usrfiles.com/ugd/b8c837_7383c48d06cb41799bd6d22c2e475cff.pdf
    • https://static.usrfiles.com/ugd/b8c837_70871d3d0f7e48c7a2680046aef1b088.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2298079133140999817f0eb7840f75a.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d92b88587ee450aaaa20a7ded358862.pdf
    • https://static.usrfiles.com/ugd/b8c837_69cf917caf734bc190fba76d69154479.pdf
    • https://static.usrfiles.com/ugd/b8c837_17210462a724451698488763164e7bf8.pdf
    • https://static.usrfiles.com/ugd/b8c837_5d758355a40747b78d801443d6e8c92f.pdf
    • https://static.usrfiles.com/ugd/cc10e7_f3a5fa032b1f4c968ccb3f469763c41a.pdf
    • https://static.usrfiles.com/ugd/b8c837_685bba00e4ab4db9b3a08a512e85b923.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf171a5ef2d744f5b6df74b9ed201237.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf3e10c080e9492e8cd5ef00654012a3.pdf
    • https://cdn.shopify.com/s/files/1/0432/7230/6846/files/trends_in_neuroscience_and_education.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/18376401992.pdf
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/cydia_download_ios_8._4.pdf
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/calendario_laboral_2020_murcia.pdf
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/35978918761.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_off00005c78.bin
490128aeb9369b513ad12e47cc34324b5b30ef91a320ef2aa837cb311c132750		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C78 5084 bytes
font_01_sfnt_off00006da6.bin
eea01cc70de3a4e9e90db4d02c8e4b2734e67d2fa6cc82c634f93aa6769496b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA6 11216 bytes

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