Malicious PDF — malware analysis report

Static analysis result for SHA-256 970d89bb13c4401a…

MALICIOUS

PDF

40.3 KB Created: 2020-08-19 19:08:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4662a1d2814efadc0a308b43068783a4 SHA-1: 210cce0ce5570445741199ba3dbaab9e5f473b0d SHA-256: 970d89bb13c4401a5d941f29fb8e16d96152e53096072d96e584e3b15aae1511
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'. This URL is embedded within the document body, disguised as an annual report. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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=holmesdale+building+society+annual+report
    • http://files.jstarkdesign.com/uploads/1/3/0/7/130776561/xiluviruderizite.pdf
    • https://cdn.shopify.com/s/files/1/0444/8839/2871/files/lewiston_maine_weather.pdf
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/beletemipekewowadafis.pdf
    • https://cdn.shopify.com/s/files/1/0429/6504/1311/files/oasis_ecfmg_login.pdf
    • https://cdn.shopify.com/s/files/1/0433/7605/0330/files/mukivope.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/donavogi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0560/7070/files/79909004198.pdf
    • https://cdn.shopify.com/s/files/1/0435/9382/6467/files/26315909585.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/free_baritone_uke_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/tupojabana.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_off00005e42.bin
b74260073c4343be15cc33953cd82785b836b44dc7328a048a34767bad251517		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E42 5596 bytes
font_01_sfnt_off00007133.bin
4d14ba218e59e657eb885fd78da1d48e3dcd7fca91da84850b6432539f9ab7fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7133 10304 bytes

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