Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9249ddb6d863e91…

MALICIOUS

PDF

46.9 KB Created: 2020-06-07 00:06:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9ee245f469cd4ce1766a7a6d5feba9a SHA-1: 2bd048abd6bb9f56fc21dc9b2428342ee39a66c8 SHA-256: f9249ddb6d863e914e48164127e21d183331f2bfa5bed8e84030acb54d78b472
92 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used in SEO link farms to drive traffic to malicious sites. The document body, though heavily obfuscated, contains a reference to 'land of confusion genesis' and a URL that aligns with this theme. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://gyrotech.org/uploads/1/3/1/4/131453924/131453924.html#land+of+confusion+genesis
    • http://ns.sedonaroadrunners.com/uploads/1/3/0/6/130639822/mokifunojaxanuriz.pdf
    • http://getorbit.net/uploads/1/3/1/3/131383630/d7d9c78e.pdf
    • http://myenhancedbeautyy.net/uploads/1/3/0/7/130775404/jikepukaz.pdf
    • http://signalmountainpest.com/uploads/1/3/1/4/131454262/8074758.pdf
    • http://myjeshop.com/uploads/1/3/0/6/130639166/3938451.pdf
    • http://xrmmklu.sites.looka.com/uploads/1/3/0/4/130436159/fomesataven.pdf
    • https://tomeximejew735833080.files.wordpress.com/2020/06/57676543473.pdf
    • https://jogafasi.files.wordpress.com/2020/06/27452703006.pdf
    • https://meriguni.files.wordpress.com/2020/06/jipodugelazixomefaxebem.pdf
    • https://favogevi.files.wordpress.com/2020/06/noweniditajuguxenegi.pdf
    • https://varaziwatu.files.wordpress.com/2020/06/bivumazovixomozenoloti.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a05.bin
e3ba8e943c52bb1f6de041c32c44d21a72d91ddd1a04b9579d0fc50c1d92bac9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A05 11568 bytes

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