MALICIOUS
124
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable or unknown domains, suggesting a link farm or redirection scheme. The document body, though heavily obfuscated, contains references to 'Us army reserve officer training' and 'wkhtmltopdf', indicating a potential lure for users seeking such information. The presence of multiple PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports the phishing and link-farming nature of this document.
Machine Learning
- Nyx PDF Classifier malicious score 0.8124
Heuristics 4
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Embedded URL info EMBEDDED_URLOne 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://www.grotekeukens.be/sites/default/files/webform/gmawards2018/dakatiwilu.pdf In PDF document text
- http://www.sumnercountyhospital.org/sites/default/files/webform/sixativitav.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/54125375098.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/zabufenopi.pdfIn PDF document text
- https://www.telluridescience.org/sites/default/files/tstc-applications/30232074114.pdfIn PDF document text
- http://pilgrimland.com/sites/default/files/webform/resume-uploads/41345860665.pdfIn PDF document text
- https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/35757612566.pdfIn PDF document text
- https://www.mainephilanthropy.org/sites/default/files/kimakevenowafuxopepasu.pdfIn PDF document text
- https://www.ofalloncasting.com/sites/default/files/webform/81254010544.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/28695523124.pdfIn PDF document text
- https://grossenbacher.co.nz/en/system/files/avoidance-training-certificates/34782296767.pdfIn PDF document text
- https://www.mothercare.ro/sites/default/files/webform/resumes/28941778760.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=us+army+reserve+officer+trainingPDF link annotation
- https://community.princeton.edu/system/files/webform/42655509772.pdfIn PDF document text
- https://printandmail.princeton.edu/system/files/webform/mizol.pdfIn PDF document text
- https://lib.asu.edu/system/files/webform/midari.pdfIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d3d9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3D9 | 5108 bytes |
SHA-256: 0d43f4725f3bc8e340dd97b237771747515342eef0ec53ec957c9a2ed9911303 |
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