Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2eb0c420fc3ba6a…

MALICIOUS

PDF

41.5 KB Created: 2020-06-09 06:59:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4eefac63bd662160e615f2c3dcd98e7 SHA-1: ae4088942145020f8ef27ad3978e8362f290f6af SHA-256: e2eb0c420fc3ba6a2039ded3c22beb35b44875a78183fe1c363f69d7f3ce125b
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO spam or to distribute malicious content. The ML classifier strongly indicated maliciousness. The document body contains garbled text but also includes the URL 'http://wordthings.net/uploads/1/3/0/7/130738911/130738911.html#vitamina+b+la+inyecci%25C3%25B3n+compleja+est' and other PDF links hosted on various domains, suggesting a link farm or redirection scheme. No scripts were extracted from this sample.

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://wordthings.net/uploads/1/3/0/7/130738911/130738911.html#vitamina+b+la+inyecci%25C3%25B3n+compleja+est
    • http://reduxcustoms.com/uploads/1/3/1/3/131380777/aa1e8e7d.pdf
    • http://chinhuan.net/uploads/1/3/1/4/131411197/9166303.pdf
    • http://hostmaster.lightmatter.media/uploads/1/3/1/0/131070398/2920706.pdf
    • http://maniglowco.com/uploads/1/3/0/5/130538875/mudulegej-jojev.pdf
    • http://4hg.undesirable.us/uploads/1/3/0/6/130639642/nowibulubuteb.pdf
    • http://webmail.aptwy.com/uploads/1/3/0/8/130874021/98f629.pdf
    • http://sailinmykonos.gr/uploads/1/3/1/3/131379029/gerixero-korodup.pdf
    • http://mta158.qualitynow.net/uploads/1/3/0/4/130483773/9960414.pdf
    • http://2zm.undesirable.us/uploads/1/3/0/5/130550910/6938965.pdf
    • http://creativeconcreterentalandsupply.com/uploads/1/3/1/0/131070010/2856792.pdf
    • http://lorrainecowan.com/uploads/1/3/1/4/131437513/dililusisanu.pdf
    • http://spotdrives.net/uploads/1/3/0/5/130539295/momebewabi-nimur-fugalox-wigofafanu.pdf
    • http://mareikura.com/uploads/1/3/0/5/130551343/furagoga_pogupifewupoku_bizelixigev_robiforegofanav.pdf
    • http://sailinmykonos.gr/uploads/1/3/1/3/131379029/gerixero
    • https://dexoxodar.files.wordpress.com/2020/06/walozowupedodabi.pdf
    • https://pixudefixig.files.wordpress.com/2020/06/79365535865.pdf
    • https://gakirebeb.files.wordpress.com/2020/06/66734582251.pdf
    • https://sunederaxi406707068.files.wordpress.com/2020/06/gelenumosutalaledojiba.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_off00007296.bin
a7f20d1de0ef952d24ed5e4f7b1c22c65ff9640f7b65ca75cb4b43dbd7faa7fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7296 11500 bytes

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