Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f3bfed64af2e4a2…

MALICIOUS

PDF

48.6 KB Created: 2020-08-05 12:19:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b26254b5c7ef03c2dbbf48240f612d6d SHA-1: e68e3201c8608e9e49dbfae34e1d4f2295ff1a55 SHA-256: 3f3bfed64af2e4a28bcd7a6c7a42428ed7883b0e5d57de8c45de5fa8c4708fb5
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector heuristic. This suggests the PDF is designed to redirect users to malicious infrastructure, likely for further exploitation or credential harvesting.

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=penetrating+keratoplasty+pdf
    • http://files.geofuljazz.com/uploads/1/3/1/3/131380741/2893472.pdf
    • http://pejakobi.iberian-home.com/uploads/1/3/2/7/132710797/abb981d82e3be1.pdf
    • http://files.polbacquet-photo.com/uploads/1/3/1/6/131636819/tevexedi_nurof.pdf
    • http://files.rootzwestbend.com/uploads/1/3/0/7/130740112/1ce6f04eb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupesuditijativerawepafu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0412/3557/files/sims_4_conflict_detector.pdf
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/58180081424.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23083433767.pdf
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/57591074530.pdf
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/wuvoxuxodul.pdf
    • https://cdn.shopify.com/s/files/1/0436/9291/6886/files/tunigugowafinasidojezule.pdf
    • https://cdn.shopify.com/s/files/1/0429/2087/0044/files/llama_1911_9mm.pdf
    • https://cdn.shopify.com/s/files/1/0436/3137/8590/files/xedun.pdf
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/13033483426.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_off00008053.bin
8afae601b8679d53b58e5923edc0a2c0e3e383cdb15bb6e6b57c6f636676e252		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8053 5376 bytes
font_01_sfnt_off000092bb.bin
f3dfc2d5a4dd688d1cee624db2dae6911e8c8754342ba35eb39b0964d21da49f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92BB 10140 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.