Malicious PDF — malware analysis report

Static analysis result for SHA-256 f33a01646a069127…

MALICIOUS

PDF

52.9 KB Created: 2020-08-01 23:08:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9826530b50d578266dda6cef58a03d55 SHA-1: aa5468e29229362f8e4642fcedf02fe1abe7c237 SHA-256: f33a01646a06912704bf8f415d14d7a227778e6f3818e1e7f6d6c090edf0635a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=iis+configuration+file'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to direct the user to malicious infrastructure under the guise of a configuration file.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=iis+configuration+file
    • http://files.malahidelions.com/uploads/1/3/2/6/132696233/9932121.pdf
    • http://files.radiantmoonchild.com/uploads/1/3/2/3/132302951/futiwipod.pdf
    • http://files.southerntackleworksfl.com/uploads/1/3/1/4/131482991/5042538.pdf
    • http://files.homesweethome.com.sg/uploads/1/3/1/1/131164431/kixuximogige-xizisiramakanu-rebor.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6411/files/67843016866.pdf
    • https://cdn.shopify.com/s/files/1/0435/8003/1137/files/jinejazuxivokuximet.pdf
    • https://cdn.shopify.com/s/files/1/0432/8371/0108/files/fenirurutewunufik.pdf
    • https://cdn.shopify.com/s/files/1/0437/8660/0609/files/gixefuvunomapikudegosi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2730/7416/files/12414310423.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/sexinupagimifexomasebale.pdf
    • https://cdn.shopify.com/s/files/1/0434/5341/5576/files/87282503511.pdf
    • https://cdn.shopify.com/s/files/1/0439/4899/8811/files/postage_rates_chart_2015.pdf
    • https://cdn.shopify.com/s/files/1/0432/6939/0500/files/gomixaguzazidor.pdf
    • https://cdn.shopify.com/s/files/1/0435/8874/7423/files/miribufubometumufuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6778/4864/files/88012186203.pdf
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/duguzafedilasugawipipur.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_off000087ee.bin
1e111ee5a4a8942aa458602128e3cf7e168d888842768f6fde6de3e1c46bb994		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87EE 4984 bytes
font_01_sfnt_off000098f5.bin
757621e528233fa4ee96780fe8e28f145ee577d3b9d170b296adfcf1d7fe70c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98F5 14676 bytes

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