Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee863b16f60ea3d…

MALICIOUS

PDF

41.6 KB Created: 2020-08-17 13:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acdbf613dc2d404f14656396ec717db3 SHA-1: cec320be1a33737d265ee0f58713e9067dbad86f SHA-256: 2ee863b16f60ea3d9a561bc8beeb9de5eeba56461afc359143cc1add5b1b1873
150 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a hotel credit card authorization form. The primary malicious URL, https://ttraff.ru/pify?keyword=hotel+credit+card+authorization+form+hampton+inn, is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL and appears to be generated by wkhtmltopdf, suggesting a programmatic approach to creating the lure.

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.ru/pify?keyword=hotel+credit+card+authorization+form+hampton+inn
    • http://files.sublimequran.org/uploads/1/3/1/6/131636692/4474857.pdf
    • https://cdn.shopify.com/s/files/1/0431/6751/4788/files/75584527156.pdf
    • https://cdn.shopify.com/s/files/1/0430/3290/3829/files/lusufolenudini.pdf
    • https://cdn.shopify.com/s/files/1/0438/6376/9243/files/divuxiwotekejuzakojore.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/80685675018.pdf
    • https://cdn.shopify.com/s/files/1/0448/1312/3744/files/86945601714.pdf
    • https://cdn.shopify.com/s/files/1/0431/6318/9405/files/roblox_filtering_enabled.pdf
    • https://cdn.shopify.com/s/files/1/0430/4066/9849/files/bloodborne_100_checklist.pdf
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/36650970609.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5739/files/57531232770.pdf
    • https://cdn.shopify.com/s/files/1/0429/4888/6684/files/foxuvunudem.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6817/files/90884913884.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_off000064fc.bin
5eda239032166305cffc17f1256d98e81420f527d442939bde5c476433bdeaf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64FC 5228 bytes
font_01_sfnt_off0000769a.bin
32d5b7b2792cde6275858d920dbeebd4e76e7c45766cad8cd898f0f205b09697		 pdf-font-stream PDF embedded font (sfnt) at offset 0x769A 10152 bytes

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