Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c35899d1f35ee06…

MALICIOUS

PDF

39.7 KB Created: 2020-06-07 05:40:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b549d2492b9967a0209cd530a5888f98 SHA-1: ac81307744c11c1d9dc3afbbfd09f2c71dff103a SHA-256: 2c35899d1f35ee0698b9b3b166f1f0f7e79e4f3bd31ceb30e874f98ebbd44a0f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains numerous external links, many pointing to uniquely named PDF files on various domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a coordinated effort to distribute content or redirect users. The ML classifier also flagged this PDF as malicious. The presence of these links and the ML detection strongly suggest a malicious intent, likely to host or redirect to further malicious content.

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://krippen-manufaktur.com/uploads/1/3/1/6/131637558/131637558.html#y%25C3%25BCksek+gerilim+tekni%25C4%259Fi
    • http://hostmaster.kayakingforcharity.co.uk/uploads/1/3/1/4/131406935/rakurizevexo.pdf
    • http://naturalleworld.com/uploads/1/3/0/4/130478566/jixupalulapawagup.pdf
    • http://realjamesriley.com/uploads/1/3/1/1/131164231/9a08069.pdf
    • http://hostmaster.blurredcircledesignandprint.co.uk/uploads/1/3/0/8/130874104/c5c17a228.pdf
    • http://mta-sts.thegroupsconference.com/uploads/1/3/1/4/131406835/68a8a1f2c.pdf
    • http://tallora.com/uploads/1/3/0/2/130291040/2113614.pdf
    • http://yezrtcx.sites.looka.com/uploads/1/3/1/8/131871799/82aeea9.pdf
    • https://sebogoveb.files.wordpress.com/2020/06/peveritejowesez.pdf
    • https://sewenam.files.wordpress.com/2020/06/93467726573.pdf
    • https://jefogusiku.files.wordpress.com/2020/06/ropululowikabibusax.pdf
    • https://xuzorun.files.wordpress.com/2020/06/98301262223.pdf
    • https://wuwafeved.files.wordpress.com/2020/06/24343943750.pdf
    • https://vogatew509869971.files.wordpress.com/2020/06/21209944159.pdf
    • https://pikirumabe.files.wordpress.com/2020/06/tafemarubivoraguker.pdf
    • https://zisepata.files.wordpress.com/2020/06/mugujupelimute.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_off00006caf.bin
2c8b36c404b1a71c82a18a6f53d7c4f5239f39be5ad00f6db833be130adf8cef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAF 11856 bytes

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