Malware Insights
The sample is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of numerous external URIs, many pointing to disposable or suspicious domains, suggests a link farm or phishing lure designed to redirect users to malicious content. Although no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to exploit vulnerabilities or trick users into downloading further payloads, aligning with common phishing and malware distribution techniques.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 5
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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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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 https://grossenbacher.co.nz/en/system/files/avoidance-training-certificates/bekam.pdf In PDF document text
- https://www.uts.cw/sites/default/files/webform/bofuwidesuxugebogaxa.pdfIn PDF document text
- http://www.pacificsportfraservalley.com/sites/default/files/webform/zajufofagobixipisuna.pdfIn PDF document text
- http://www.friendlycc.com/sites/default/files/webform/topevonizudurazot.pdfIn PDF document text
- http://klm3fg.grhosting.cz/sites/default/files/webform/files/5308316073.pdfIn PDF document text
- https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/80982398497.pdfIn PDF document text
- https://www.natsihwa.org.au/sites/default/files/webform/21073527915.pdfIn PDF document text
- http://portal-mysigma.com/system/files/student-proof/41429692510.pdfIn PDF document text
- http://oaklandchildcare.org/sites/default/files/webform/wafawujozovu.pdfIn PDF document text
- http://www.friendlycc.com/sites/default/files/webform/85881129832.pdfIn PDF document text
- https://www.uts.cw/sites/default/files/webform/xewaz.pdfIn PDF document text
- http://portal-mysigma.com/system/files/student-proof/pifudolaloxafedotodela.pdfIn PDF document text
- http://cicatsalud.com/html/sites/default/files/webform/dekif.pdfIn PDF document text
- https://aboss.by/sites/default/files/webform/10891008032.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=ap+biology+exam+review+guide+answer+keyPDF link annotation
- https://community.princeton.edu/system/files/webform/22535495660.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ef88.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF88 | 5596 bytes |
SHA-256: c5177dc72e51323243ffb24b5dbf33c8c66afc93a6c7c911d49089b282bd9685 |
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font_01_sfnt_off00010284.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10284 | 12048 bytes |
SHA-256: a78f2fb84a5a7abdfcce2bec47150558a45321da69f240e4e9c2f6e87cf32223 |
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font_02_sfnt_off00012af4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AF4 | 16036 bytes |
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940 |
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font_03_sfnt_off00013f5d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13F5D | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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