Malicious PDF — malware analysis report

Static analysis result for SHA-256 f13984bbf8ee4741…

MALICIOUS

PDF

29.9 KB Created: 2020-06-03 00:02:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bcac1181b41ba836d6dc58faa1222d92 SHA-1: 2c3fb89401a48f539381631755919463812d604d SHA-256: f13984bbf8ee4741b316547835b8575e1ed4a5e3c3a50b555218575979d8318f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF document was flagged by a machine learning classifier as malicious. It contains a significant number of external links, with several pointing to PDF files hosted on domains that appear to be part of a link farm. The document body contains garbled text and embedded URLs, suggesting it is not intended for legitimate user consumption. The primary attack pattern appears to be the creation of a link farm to manipulate search engine results or to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://katylactation.com/uploads/1/3/0/4/130489350/130489350.html#la+momia+tom+cruise+pelicula+complet
    • http://make-u-up.ca/uploads/1/3/0/5/130588551/5594637.pdf
    • http://thewindingsheetoutfit.org/uploads/1/3/0/3/130323952/visonape.pdf
    • http://natalieberry.net/uploads/1/3/0/5/130550948/mavisuwonupoga.pdf
    • http://katylactation.com/uploads/1/3/0/4/130489350/terms.html
    • http://katylactation.com/uploads/1/3/0/4/130489350/dmca.html
    • http://katylactation.com/uploads/1/3/0/4/130489350/policy.html
    • https://sivutis.files.wordpress.com/2020/05/36379420077.pdf
    • https://zefafegepidi.files.wordpress.com/2020/05/41920250411.pdf
    • https://vimomapofog.files.wordpress.com/2020/05/fekamitivodikozewokov.pdf
    • https://sojuwata326802104.files.wordpress.com/2020/06/dexajimusogilarabokupekan.pdf
    • https://zezumova.files.wordpress.com/2020/05/kijelojojuvafa.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_off000049a6.bin
ea76eaadb946d36c3f10a5233b859f2e5e62b8abfd86ba100061b90889b112e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49A6 10580 bytes

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