MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with numerous URLs pointing to potentially compromised websites or disposable hosting. The presence of multiple external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly suggest this document is designed to redirect users to malicious sites, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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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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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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://crysiq.ru/uplcv?utm_term=stranger+things+season+1+episode+1+watch+online PDF link annotation
- http://bjbtrh.com/files/pic/file/sisomuvimupim.pdfIn PDF document text
- https://izyskately.ru/foto/ck/files/kosizo.pdfIn PDF document text
- https://doellefjelde-mussemarked.dk/images/newsmail/file/besiwe.pdfIn PDF document text
- http://elementsgogreen.com/userfiles/file/38933272909.pdfIn PDF document text
- https://undergroundtakeout.com/userfiles/file/fisuxidur.pdfIn PDF document text
- http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/161408c38c48e1---jopako.pdfIn PDF document text
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/161395e5321550---38516687460.pdfIn PDF document text
- http://constantemail.com/userfiles/file/1631721314371613851.pdfIn PDF document text
- http://www.motocams.cz/ckfinder/userfiles/files/6261517.pdfIn PDF document text
- https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16134bbab213ec---luxamidugo.pdfIn PDF document text
- https://rts-wm.com/ckfinder/userfiles/files/23298397233.pdfIn PDF document text
- http://www.biosafety.biz/ckfinder/userfiles/files/gazuzubatapig.pdfIn PDF document text
- https://ist-lb1.istanajp.com/contents/files/57958584183.pdfIn PDF document text
- http://otohondamientay.com/upload/files/zakis.pdfIn PDF document text
- https://projectmine.hu/ckfinder/userfiles/files/30118278149.pdfIn PDF document text
- https://santaclara.com/wysiwygfiles/file/96072305778.pdfIn PDF document text
- http://agisma.ru/files/pages/files/65120475854.pdfIn PDF document text
- http://aisne.proximeo.com/ckfinder/userfiles/files/xatubanopoxi.pdfIn PDF document text
- https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/deaabead3abf075e0a9f7d5cbed89b50/tazavofezulapuku.pdfIn PDF document text
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/9ee273686c8005e959b5f693a98118d9/55849304235.pdfIn PDF document text
- http://www.investinwielkopolska.pl/application/lib/ckfinder/userfiles/files/xizupuwiwisebet.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://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_off0000b92d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB92D | 18248 bytes |
SHA-256: 2db8b8570e353d1c037feb5bec59be04b6dacc0695d6db80923eda6b63f40e56 |
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font_01_sfnt_off0000e86e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE86E | 11004 bytes |
SHA-256: 047849ac01eb2e859c76081d2324831f7bae9563c3f9099eeb9d0aa15ac2fc3f |
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font_02_sfnt_off000101ce.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101CE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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