Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c3329632b07f614…

MALICIOUS

PDF

35.3 KB Created: 2020-06-03 02:56:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b66cbcf636300fc7fa16bde764f4bf88 SHA-1: fc08fb48a83c4aa144de3a037987696d853546dc SHA-256: 2c3329632b07f6148fd4d786e5b34072c6e58148913c726d7cd5b0ed6ad27bd9
92 Risk Score

Malware Insights

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

The PDF contains a clear lure for downloading pirated software, specifically 'autocad 2014 español'. It leverages a link farm technique, embedding numerous external links, many of which point to potentially malicious content. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm designed to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://cequime.com/uploads/1/3/1/3/131383928/131383928.html#descargar+autocad+2014+espa%25C3%25B1ol
    • http://jaretail.net/uploads/1/3/1/0/131070334/lovaralewexolit-nekogevegevowil-bovapesebulem-subazesus.pdf
    • http://issavibeonline.com/uploads/1/3/2/3/132302940/vavitidojatoxi_bexuvagud_likoti.pdf
    • http://loanzon.nyc/uploads/1/3/0/6/130604821/3113199.pdf
    • http://cequime.com/uploads/1/3/1/3/131383928/terms.html
    • http://cequime.com/uploads/1/3/1/3/131383928/dmca.html
    • http://cequime.com/uploads/1/3/1/3/131383928/policy.html
    • https://kigojod.files.wordpress.com/2020/05/lavisatubutoxij.pdf
    • https://wodozuref.files.wordpress.com/2020/06/68330946915.pdf
    • https://baxejubox.files.wordpress.com/2020/05/xubufudebezujesepevapebef.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_off000051e2.bin
a909daaa3493d89245c3b5912e61d1d24aca938a67d855e7471322ab1c3114bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51E2 2920 bytes
font_01_sfnt_off00005c36.bin
93451b603bfcd8524af4a6880a86fde8d25fedb969b35d5f7a3cd4c310b50674		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C36 11524 bytes

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