MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. Heuristics indicate it uses a browser extension installation lure, a common social-engineering technique to trick users into downloading further malware or divulging credentials. The document body is heavily obfuscated, but the presence of external URIs and the overall detection suggest a phishing or malware delivery attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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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.muttypawsacademy.com/sites/default/files/webform/vaccines/17184396690.pdf In PDF document text
- https://www.a1touchsolution.nl/sites/default/files/dovav.pdfIn PDF document text
- https://architecturaldesigninc.com/sites/default/files/56675633315.pdfIn PDF document text
- https://www.blplegal.com/sites/default/files/webform/25596831819.pdfIn PDF document text
- https://natsihwa.org.au/sites/default/files/webform/degajakuko.pdfIn PDF document text
- https://vectorcorp.net/sites/default/files/webform/resume/tefofavokalozigukar.pdfIn PDF document text
- https://www.enwidth.com/sites/default/files/webform/resumes/zozagosetimof.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/durigoxilakomisi.pdfIn PDF document text
- https://www.a1touchsolution.nl/sites/default/files/rowiduw.pdfIn PDF document text
- https://www.telluridescience.org/sites/default/files/tstc-applications/38780162719.pdfIn PDF document text
- https://www.enwidth.com/sites/default/files/webform/resumes/sojinikud.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/seliruni.pdfIn PDF document text
- https://extranet.blanchisserie-toulousaine-de-sante.com/sites/extranet.blanchisserie-toulousaine-de-sante.com/files/documents/justificatifs/niroxopewesanusogub.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/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=how+to+install+directv+player+on+chromebookPDF link annotation
- https://minorsoncampus.princeton.edu/system/files/webform/45540448673.pdfIn PDF document text
- https://www.ice.cam.ac.uk/sites/www.ice.cam.ac.uk/files/webform/tivajojisepizoni.pdfIn PDF document text
- https://ec.europa.eu/eip/agriculture/sites/default/files/webform/5272012193.pdfIn PDF document text
- https://printandmail.princeton.edu/system/files/webform/zixulupuritijidegebi.pdfIn PDF document text
- https://minorsoncampus.princeton.edu/system/files/webform/27732669772.pdfIn PDF document text
- https://campusrec.princeton.edu/system/files/webform/18758627140.pdfIn PDF document text
- https://printandmail.princeton.edu/system/files/webform/fasulegok.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e691.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE691 | 5732 bytes |
SHA-256: cf622c24d617d375eb99af129b0d97edd82406e2b687159ce386b82a212650e0 |
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font_01_sfnt_off0000f9f5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9F5 | 10672 bytes |
SHA-256: 044090cfc1f3292c872485031d31ac53e2b24020c18c67918e0ba1a1ab87b087 |
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