Malicious PDF — malware analysis report

Static analysis result for SHA-256 c697fd4728b755c6…

MALICIOUS

PDF

36.9 KB Created: 2020-04-11 22:16:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a8199142f49b60cb94c446e26c7cb0f1 SHA-1: 484d325c09c870ca41ebf46870e0a7a052cd99d0 SHA-256: c697fd4728b755c647802ca42752a437839601ad08b00834af7cab447a856524
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The primary URL http://ciggysound.com/uploads/1/3/1/3/131379719/131379719.html#derecho+internacional+publico+el+espacio+ultraterrestre is likely part of a link farm designed to attract traffic and potentially distribute malware or phish users. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of this document.

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://ciggysound.com/uploads/1/3/1/3/131379719/131379719.html#derecho+internacional+publico+el+espacio+ultraterrestre
    • http://centraldallascdc.net/uploads/1/3/0/8/130874634/93bb5f56edcf94.pdf
    • http://therannmovement.com/uploads/1/3/0/4/130483614/korizizojofa-bobefigaf.pdf
    • http://deb-snyder.com/uploads/1/3/0/3/130323900/ca098c1c.pdf
    • http://surtimportaciones.com/uploads/1/3/0/2/130289163/7597276.pdf
    • http://nutritionavenuefitness.com/uploads/1/3/1/1/131164075/rakobozonowewaduneda.pdf
    • http://jordanian-schools.com/uploads/1/3/1/4/131454816/8081479.pdf
    • http://radite.com/uploads/1/3/0/5/130543134/malolonati.pdf
    • http://thrivingdisciple.com/uploads/1/3/0/2/130289530/aba9e4e36a42.pdf
    • http://9500bradford.com/uploads/1/3/1/1/131163908/4353b1be4bb6.pdf
    • http://junglerx.com/uploads/1/3/0/9/130969726/793818.pdf
    • http://resistenciaseletrica.com/uploads/1/3/0/7/130738944/mupenesezepun-silidewog.pdf
    • http://quartzowater.com/uploads/1/3/0/6/130604678/riwes.pdf
    • http://refugedajourney.com/uploads/1/3/0/6/130621015/19993d8b.pdf
    • http://bearcreekorganicspa.net/uploads/1/3/0/6/130639105/5cebb66e.pdf
    • http://www.erasor.org/uploads/1/3/0/5/130589460/mulemewi.pdf
    • http://jordanian-schools.com/uploads/1
    • 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_off00006933.bin
c98ce8d3acef90460d074dd92050ade93ab1f4226b797fd38aab8f4969f700bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6933 7464 bytes

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