MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF 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 external URIs pointing to potentially compromised or disposable hosting. The presence of multiple PDF link farm rules suggests a deliberate attempt to distribute links to malicious content, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://krisoc.ru/uplcv?utm_term=fortnite+mobile+android+list PDF link annotation
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161412578986fa---vobak.pdfIn PDF document text
- https://megalight.lv/uploads/files/3981404767.pdfIn PDF document text
- http://anquocrealty.com/uploads/image/files/42509755662.pdfIn PDF document text
- http://pension-erlkoenig.de/img/editor/file/xomadovanesurobetuwinupu.pdfIn PDF document text
- http://oprandi.it/userfiles/files/37917395851.pdfIn PDF document text
- http://www.optimizecost.com/admin/ficheros_fckedit_subidos/54934472708.pdfIn PDF document text
- http://lamorenj.com/userfiles/files/zuvopujepogewabafoposekox.pdfIn PDF document text
- https://www.huaikrachaohospital.go.th/assets/global/lib/ckfinder/userfiles/files/megelubasunoxunanedigabun.pdfIn PDF document text
- https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16131ce31b3ece---lozivumiz.pdfIn PDF document text
- https://uslugiinzynierskie.eu/eurostyl/photos/file/69071332249.pdfIn PDF document text
- http://droprint.my/home/ququ4923/public_html/userfiles/file/97860350086.pdfIn PDF document text
- http://risorsaterra.it/userfiles/files/padofuruka.pdfIn PDF document text
- http://att-na.com/upload/25864013918.pdfIn PDF document text
- http://sziszolg.hu/editor_up/zavixuzivufen.pdfIn PDF document text
- https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/16143b93ab8493---vujitivabevop.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140e6dc7f3f5---nekimexoruru.pdfIn PDF document text
- http://studiofantino.it/userfiles/files/suxapapililopaxejuvuse.pdfIn PDF document text
- https://tmtteks.com/files/jajuwaporusizifutid.pdfIn PDF document text
- http://anhhieu.vn/hinhanh/file/telosox.pdfIn PDF document text
- https://organicfertilizerproduction.com/d/files/zesalotiremolopezuzused.pdfIn PDF document text
- https://almuhja.ps/ckfinder/userfiles/files/zovikenamafilepimolisug.pdfIn PDF document text
- http://seoaudytor.pl/userfiles/file/26274046760.pdfIn PDF document text
- https://www.gico.ge/ckfinder/userfiles/files/92590724001.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_off0000b045.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB045 | 17224 bytes |
SHA-256: 438bebf1f6d53f6d111bc162d8637c2962cd6483557a31b2547fd84b184c279a |
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font_01_sfnt_off0000dc78.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC78 | 10524 bytes |
SHA-256: a25019feafcd6cee9132b7ceac449e5d7cf452c4a2c563f5b52f39635507b551 |
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font_02_sfnt_off0000f456.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF456 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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