Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dd5fceb1f9bfe47…

MALICIOUS

PDF

42.6 KB Created: 2020-08-25 03:54:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4afaafe1d03835036c2ccf54501c2e94 SHA-1: 1e5a320db0e0741b4e844bfff75dc1466e611300 SHA-256: 9dd5fceb1f9bfe47b256b018858963465617991225e95c0c95fac6071128ac6b
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains a string that appears to be a unit conversion query, likely a lure. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious 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=transformar+de+centigrados+a+fahrenheit
    • http://tusos.mtncoils.co.uk/uploads/1/3/1/4/131406427/vobuzo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4431/5040/files/96495429784.pdf
    • https://cdn.shopify.com/s/files/1/0437/2794/5889/files/tomtom_mydrive_connect.pdf
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/62495451142.pdf
    • https://cdn.shopify.com/s/files/1/0429/3174/9031/files/mageze.pdf
    • https://cdn.shopify.com/s/files/1/0432/1758/4285/files/fundamentos_psicologicos_de_la_orientacion_educativa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0873/6928/files/mumipijuxetaresorok.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/11131269839.pdf
    • https://cdn.shopify.com/s/files/1/0439/4788/4699/files/24013226018.pdf
    • https://cdn.shopify.com/s/files/1/0429/5950/3519/files/zexevujexeliruzam.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/semuz.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_off000051f5.bin
f14796723a9177b678a111a5224e27365e75a5e7810b9b29329f6be35f8abd1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51F5 5352 bytes
font_01_sfnt_off000063fb.bin
82ae10d31f43bbc71b4b513e8bfa0c9d7667048558ab91ffa88a844283fc9bce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63FB 10500 bytes
font_02_sfnt_off000087cc.bin
975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87CC 16312 bytes

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