MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The embedded URLs and the nature of the heuristics strongly indicate a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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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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://pistant.ru/uplcv?utm_term=the+rate+of+diffusion+is+affected+by+which+of+the+following PDF link annotation
- http://vidiniaibreketai.lt/userfiles/file/57771804751.pdfIn PDF document text
- https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132521d4daae---18381945165.pdfIn PDF document text
- https://godahoian.com/app/webroot/upload/files/13041160762.pdfIn PDF document text
- https://efficimm.fr/userfiles/files/47332843807.pdfIn PDF document text
- http://www.flamanville-76.fr/upload/file/wemuxegavajexekifu.pdfIn PDF document text
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16156b26e0e870---mumixesuwabalipupo.pdfIn PDF document text
- https://biholka.cz/uploades/userfiles/file/xugoxajarimaf.pdfIn PDF document text
- http://ruben.pl/ckfinder/userfiles/files/81113811300.pdfIn PDF document text
- http://futimisdev.com/userfiles/file/mopus.pdfIn PDF document text
- http://geriatriccarenewjersey.com/userfiles/files/zogitekub.pdfIn PDF document text
- https://wanna-drive.nl/files/File/vizopebudi.pdfIn PDF document text
- http://redemaisfarma.com/userfiles/file/25535952794.pdfIn PDF document text
- http://viorina-deko.com/images/file/xixinodumupifegekusav.pdfIn PDF document text
- http://stark-tools.ru/images/uploaded/8695737424.pdfIn PDF document text
- https://maggies-handmade.com/UserFiles/files/87421198219.pdfIn PDF document text
- http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613780f65bf8c---93806653351.pdfIn PDF document text
- https://unaizahic.com/Files/files/nopepalosa.pdfIn PDF document text
- https://inprovituruguay.com/ckfinder/userfiles/files/kakidanitolilaf.pdfIn PDF document text
- https://grandiosieventinuziali.it/filesUploads/file/mawexasage.pdfIn PDF document text
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/249tm42eucvu99tcta5ks94te7/24537890688.pdfIn PDF document text
- http://schule.havonix.com/ckfinder/userfiles/files/lakafakexugiv.pdfIn PDF document text
- http://antansconstructions.com/ckfinder/userfiles/files/gifamujosugasatuzox.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_off0000b234.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB234 | 17588 bytes |
SHA-256: e4d1df912b57c7cf1d4a2f1955984e87b5d0ae53e6b304c7f396355afeb11add |
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font_01_sfnt_off0000dec3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEC3 | 11156 bytes |
SHA-256: 7f675e22637f9f7aa0b6b909aa7255f7bf2ec4f9ae2efc01a51e2c82cf28d82c |
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font_02_sfnt_off0000f8af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8AF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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