Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fdeba3b94281398…

MALICIOUS

PDF

36.8 KB Created: 2020-03-24 02:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bdcb0a7fd3dca9523dc3d7567f096d95 SHA-1: ff281040456652194715dea34ced23c33c7d06ae SHA-256: 7fdeba3b94281398e30cd91d64e1949848a5ee63a62a8fb30ee2377f4a123876
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the presence of numerous external links suggests a delivery mechanism for 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://perillianconsulting.com/uploads/1/3/0/2/130273616/130273616.html#scale+master+classic+v3.0+custom+scale
    • http://oishifit.com/uploads/1/3/0/4/130476485/mutuzik.pdf
    • http://www.paige-elizabeth-allen.com/uploads/1/3/0/5/130588509/7714983.pdf
    • http://hostmaster.hampshire-epc.co.uk/uploads/1/3/0/5/130542953/rifoxap.pdf
    • http://shearswarehouse.com/uploads/1/3/0/7/130776490/9699690.pdf
    • http://whybeclark.com/uploads/1/3/0/2/130289734/2299916.pdf
    • http://bergaudioservices.com/uploads/1/3/0/6/130621803/53b4e02725cf4e2.pdf
    • http://juntosaleer.com/uploads/1/3/0/5/130551692/0297cabf.pdf
    • http://thelifestylestorey.com/uploads/1/3/0/4/130476738/f6949a6d.pdf
    • http://guardianlawncare.net/uploads/1/3/0/7/130738939/871e079.pdf
    • http://dianeoshea.com/uploads/1/3/0/7/130739688/472ac6ce.pdf
    • http://nightout.studio/uploads/1/3/0/6/130620384/b160cbbbb319.pdf
    • http://perducam.com/uploads/1/3/0/4/130476114/naxugetodo.pdf
    • http://sanisphere.com/uploads/1/3/0/6/130604238/947581.pdf
    • http://whittierboulevard.com/uploads/1/3/0/8/130813934/97a213f.pdf
    • http://mrserio.com/uploads/1/3/0/5/130551229/betemeweb.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_off000067bd.bin
db8122b90756831decd48c4ea71e547b6ffb7e9157291ecc9370a7fc65139077		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67BD 7840 bytes

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