MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. The sample also functions as a link farm, directing users to multiple external URLs hosted on potentially compromised or disposable domains. These factors, combined with ClamAV detection and ML classification, strongly indicate a malicious phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
Heuristics 7
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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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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://itaxabc.com/userfiles/file/20210905055126_243025399.pdf In PDF document text
- https://terlickodds.cz/www/www/fckphotos/file/85151448737.pdfIn PDF document text
- http://hizirferforje.com/admin/fckeditor/editor/images/file/lepokawono.pdfIn PDF document text
- https://sanaspinler.net/calisma2/files/uploads/dupodewigavupafofuk.pdfIn PDF document text
- https://pensiuneaselina.ro/userfiles/file/xaladij.pdfIn PDF document text
- http://improntediteatro.it/userfiles/files/pusubavubixezujenudosu.pdfIn PDF document text
- https://zippy-inc.com/app/webroot/userfiles/files/20141071295.pdfIn PDF document text
- http://xingzhongjing.com/userfiles/file/20210908153336_1907520277.pdfIn PDF document text
- http://logicamail.it/draft/media/bimudowusavegedupozeni.pdfIn PDF document text
- https://unicorn.mn/js/ckfinder/userfiles/files/tolomuk.pdfIn PDF document text
- http://halongbaycruises.org/upload/files/84826426162.pdfIn PDF document text
- http://harchovyk.com/userfiles/file/pigesisokivi.pdfIn PDF document text
- http://studiolegaletrotta.eu/userfiles/files/getixoxufefex.pdfIn PDF document text
- https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138fddebfb4b---ravazef.pdfIn PDF document text
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133a957a54e6---lizutad.pdfIn PDF document text
- http://vallovin.it/userfiles/files/bosegasivomopa.pdfIn PDF document text
- http://jagdrevier.hu/upload/images/file/36362354924.pdfIn PDF document text
- https://hunghiephuylog.com/upload/files/28510747947.pdfIn PDF document text
- http://asid.rw/userfiles/file/rufozunuwubetekudixazavam.pdfIn PDF document text
- https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161369aa02a20f---40419150642.pdfIn PDF document text
- http://baovekhucongnghiep.com/upload/files/fisutexabibibano.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=robot+unicorn+attack+2+play+storePDF 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_off0000d74e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD74E | 10976 bytes |
SHA-256: ebee56a953f5771b849fc9d2d4ecc2c592ecf7f79085ec4c86aabacfa3ee377f |
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font_01_sfnt_off0000f0d5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0D5 | 17496 bytes |
SHA-256: a3b4064edbcc42432dbf810a4469fa0e0dd741f81438f6dd53445e29fa6fba04 |
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font_02_sfnt_off00011e6a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E6A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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