Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6d587a0a2e33ddd…

MALICIOUS

PDF

49.3 KB Created: 2020-07-29 23:41:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76eaca98de8877391bce3a173d76aa6d SHA-1: db1e3233308ef8d76e83c2e738ff85b899e52ccb SHA-256: b6d587a0a2e33ddd65bfb21ef998791c8b9a93f036adef76c7098e31f90b412c
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits a PDF link farm behavior, with numerous links to PDFs hosted on Shopify. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the primary malicious URL is a redirector designed to lead users to potentially harmful content.

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/pify?keyword=the+dark+crystal+creation+myths+vol.+1+pdf
    • http://files.belmulletheritageday.com/uploads/1/3/0/7/130740262/3188a96a21e7ab.pdf
    • http://files.crscat.org/uploads/1/3/2/7/132740778/1031094.pdf
    • http://files.indacreations.com/uploads/1/3/0/8/130814611/jidorotagisajifi.pdf
    • http://files.neverthelessshecomposed.org/uploads/1/3/1/6/131637056/xajutakexug-juzako.pdf
    • http://files.bellisimoe.com/uploads/1/3/1/8/131871501/losesaxape_garuguse_fusegoxiw_xotunovuji.pdf
    • http://files.neverthelessshecomposed.org/uploads/1/3/1/6/
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/topizewowezizupi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/41154526711.pdf
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/kusogovunuxam.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/27548442995.pdf
    • https://cdn.shopify.com/s/files/1/0435/3291/0751/files/51110165299.pdf
    • https://cdn.shopify.com/s/files/1/0431/0594/3701/files/wazitegujekudexosif.pdf
    • https://cdn.shopify.com/s/files/1/0433/6713/7438/files/sebijibugetiwepuzudivofot.pdf
    • https://cdn.shopify.com/s/files/1/0438/2123/6386/files/levupapasevulamomimiwale.pdf
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/gufigirojozozetulami.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/pawosopibi.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_off0000702d.bin
39b42ebe68858c0a7a72a18af83ab5da6b6a65ee859a37d81b88f674fb9ba022		 pdf-font-stream PDF embedded font (sfnt) at offset 0x702D 5440 bytes
font_01_sfnt_off00008290.bin
c9145123b33b727cd59a07cbcc0aaea7e239e9471138da6425a4b72dc15f777b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8290 16476 bytes

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