MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and URL analysis point to a malicious redirection scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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://synerhu.ru/uplcv?utm_term=bodies+of+water+names+list PDF link annotation
- http://mastervgtour.by/var/upload/file/raranedikefapu.pdfIn PDF document text
- http://avvocatogiuliani.it/userfiles/files/78273758259.pdfIn PDF document text
- https://datajournonepal.org/files/dajirus.pdfIn PDF document text
- https://markmont.eu/editor_uploads/system/files/39345419009.pdfIn PDF document text
- http://ptaki.info/imgekoprojekty/files/zaniladepananipajepon.pdfIn PDF document text
- http://urbanconstructions.org/images/uploadedimages/file/nikimowaweturedot.pdfIn PDF document text
- https://perfecthospital.net/ckfinder/userfiles/files/47984627566.pdfIn PDF document text
- https://classoft.ro/userfiles/file/25322754392.pdfIn PDF document text
- http://mazurubezpieczenia.pl/zdjecia/fck/file/69852596677.pdfIn PDF document text
- http://123flower.doweb.kr/upload/files/27577763451.pdfIn PDF document text
- http://eau-msu.ru/ckfinder/userfiles/files/vubumunafitigosorukokosal.pdfIn PDF document text
- https://sklepbonus.pl/userfiles/file/gafijeloboluzovad.pdfIn PDF document text
- http://opsir.eu/files/file/21284021666.pdfIn PDF document text
- https://etonbio.com/newsLetters/images/file/46478434962.pdfIn PDF document text
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613710bb516f1---98962543432.pdfIn PDF document text
- http://tianlanlawyer.com/filespath/files/20210903011947.pdfIn PDF document text
- https://jazykovytabor.topenglish.sk/app/webroot/gallery/files/61974869373.pdfIn PDF document text
- https://aquamedicasatumare.ro/ckfinder/userfiles/files/51245554411.pdfIn PDF document text
- https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16141221666536---rorolobofapisus.pdfIn PDF document text
- https://bipalisdemo.dashindonesia.com/userfiles/files/lokasife.pdfIn PDF document text
- http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d511aa24b8---gopokesepamel.pdfIn PDF document text
- http://footstepfloor.com/upfiles/files/zupivute.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_off0000e7a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7A6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ffbd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFBD | 10656 bytes |
SHA-256: 13f1136b27a0c09f126e5f06179ff52bbe0c32b5d3b74d291550ef721a46168d |
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font_02_sfnt_off00011831.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11831 | 17888 bytes |
SHA-256: 474941d5b1bb0681c7cbccd4e78be739832274500b0d6df1cf19d169c26433db |
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