Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fe4bbef495e5b47…

MALICIOUS

PDF

63.0 KB Created: 2020-08-30 11:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a215a1f069b8ec740b9e73db74ba7eb SHA-1: f9c4031c623f296f1c422ca410646a9259d1fdab SHA-256: 9fe4bbef495e5b47fb9588b01c006e09d85d868cf0fbaaa802d6a39a61ad456c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=good+skyrim+names'. This indicates the document's primary purpose is to redirect users to a potentially harmful external site. The document body, though heavily obfuscated, also contains the same URL, reinforcing the redirection attempt. The file is generated by wkhtmltopdf, suggesting it might be part of a larger phishing or scam campaign.

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.cc/wix?keyword=good+skyrim+names
    • https://static.usrfiles.com/ugd/eed56f_4c81b83e94274636b810f527958d5fde.pdf
    • https://static.usrfiles.com/ugd/b8c837_759fa00d1b73406ab04d855dd876ea7d.pdf
    • https://static.usrfiles.com/ugd/dad90e_d5f0792afa324e03a1ae8d04268d75d2.pdf
    • https://static.usrfiles.com/ugd/b8c837_facd8f0f98a144e2b13d908f4d4011ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_7d7af03a04d145f7a49d1f0b9cdc5789.pdf
    • https://cdn.shopify.com/s/files/1/0432/0349/4043/files/10214554440.pdf
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/snow_geese_migration_report.pdf
    • https://cdn.shopify.com/s/files/1/0437/1687/0309/files/dexobawolus.pdf
    • https://static.usrfiles.com/ugd/857e61_45b414e3ca27427e8ea87a2e65d29fdc.pdf
    • https://static.usrfiles.com/ugd/d1d005_7fa29e4cf0d3473d9d821c06681cc2ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_6dec58d801f2429098264fca1a8c775f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e934b1eb7db94ee79e3b7e0d26bc9e27.pdf
    • https://static.usrfiles.com/ugd/4dd980_0308f12c7f96453bbb3541daaa484f0a.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/20891160721.pdf
    • https://cdn.shopify.com/s/files/1/0447/9890/2438/files/anatomy_and_physiology_of_larynx.pdf
    • https://cdn.shopify.com/s/files/1/0432/1063/7476/files/alphabet_handwriting_worksheet_generator.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_off0000aff7.bin
6a60dd08ab3d6f2d57fc870d9f115e5cbfd05eb64964ef6403e6ded910db0d9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFF7 5136 bytes
font_01_sfnt_off0000c166.bin
e6354ce0ae3cd11d9287e2c67563717c1a6bdebce0e6840a664044b22964cf16		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC166 14756 bytes

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