MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF contains embedded JavaScript, a common technique for exploiting vulnerabilities or redirecting users. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a large number of links to potentially disposable domains, suggesting a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://yuhenganquan.com/userfiles/file/20210904000346_647938042.pdf In PDF document text
- http://harc-ias.vn/Images_upload/files/24620307780.pdfIn PDF document text
- http://cathyourhair.nl/js/ckfinder/userfiles/files/jexuw.pdfIn PDF document text
- http://arndt-fahrschule.de/userfiles/file/52099944725.pdfIn PDF document text
- https://dondepodemosir.com/userfiles/file/limamire.pdfIn PDF document text
- https://sharkovinkom.com/sharkovinkom.com/ckfinder/userfiles/files/82051130389.pdfIn PDF document text
- http://gkz-crimea.ru/userfiles/file/vizada.pdfIn PDF document text
- http://luberoff.com/userfiles/file/87393566344.pdfIn PDF document text
- http://fese.in/ienupdimages/images/files/74949266349.pdfIn PDF document text
- http://vitali-schulz-eiskunstlaufen.de/userfiles/files/2911408176.pdfIn PDF document text
- https://www.xtremefitness.com.au/application/third_party/ckfinder/userfiles/files/3071237608.pdfIn PDF document text
- https://ubk-sad.de/azubi/userfiles/files/sedas.pdfIn PDF document text
- http://electric-kernbichler.at/91355037189.pdfIn PDF document text
- http://omni-links.com/images/blog/file/89389868073.pdfIn PDF document text
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a82bbcc4a7---ledogagejizonutogup.pdfIn PDF document text
- https://afgventuregroup.com/cfiles/file/fozojopudamozaxevujiwe.pdfIn PDF document text
- http://bearings-home.com/userfiles/file/34508877653.pdfIn PDF document text
- https://studybrilliant.online/app/webroot/img/userfiles/file/juterabigezufuka.pdfIn PDF document text
- http://tunesistudio.eu/userfiles/files/kowopo.pdfIn PDF document text
- https://bartonsteel.com/tony/barton/ckfinder/userfiles/files/zulebowunap.pdfIn PDF document text
- https://medbioplast.com/klucharnet/images/file/27584892624.pdfIn PDF document text
- http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613e72c427440---vepuvogarebuzevigowu.pdfIn PDF document text
- http://netflor.pl/upload/File/9578534973.pdfIn PDF document text
- http://bjerkelunden.org/content/files/userfiles/file///70354719290.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=vidmate+iphone+apk+downloadPDF link annotation
- 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dde8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDE8 | 10536 bytes |
SHA-256: 881cb360e1581b7e558768a668774f36be8bccc7fbd82b9d324b195ddd8db98f |
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font_01_sfnt_off0000f5b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5B4 | 18528 bytes |
SHA-256: 9c5aab0e32e0adb710605cb6d57d449fdca5da2625c9407549f55039e00835a8 |
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font_02_sfnt_off0001258c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1258C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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