MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external links, many pointing to other PDFs, and is flagged as a link farm on disposable hosting. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document's intent is to trick users into believing they need a password for an archive, a common tactic to hide malicious payloads from initial scanning. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://ketchas.ru/uplcv?utm_term=how+to+make+pdf+password+protected+free PDF link annotation
- https://samoinstitute.mn/uploads/assets/file/76479954888.pdfIn PDF document text
- http://fsnmmaterials.com/UPFILE/userfiles/files/6251838076.pdfIn PDF document text
- https://istanbularicilikfestivali.com/upload/ckfinder/files/5106663736.pdfIn PDF document text
- https://agrimal.pl/userfiles/file/jezezatukexomaligepajivi.pdfIn PDF document text
- http://bobiniauto.com/userfiles/file/41401259378.pdfIn PDF document text
- http://cascinamana.it/userfiles/file/83735250118.pdfIn PDF document text
- https://tainandentist.com/uploads/files/202109050051159840.pdfIn PDF document text
- https://laptopserwis.com/app/webroot/media/files/wofekoxefixamazataxemuka.pdfIn PDF document text
- http://liveranigioielli.it/userfiles/files/varefikite.pdfIn PDF document text
- http://annabarons.com/files/files/36229671116.pdfIn PDF document text
- http://gabinetortodontyczny.eu/userfiles/file/54865696811.pdfIn PDF document text
- https://bonvoyageindia.in/ckfinder/userfiles/files/meluwijeze.pdfIn PDF document text
- https://arte-salon.ru/upload_picture/93318262849.pdfIn PDF document text
- http://maymaygiaydachidang.com/upload/files/64617921062.pdfIn PDF document text
- http://makaroma.fr/upload/file/xexolepipagoge.pdfIn PDF document text
- http://reicar.dk/userfiles/file/82197377995.pdfIn PDF document text
- https://yptea.com/data/fckeditor/files/ranurimemigubonaxu.pdfIn PDF document text
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614e119b7369c---86173796181.pdfIn PDF document text
- http://projecthouse.bg/uploads/CKfinder/files/nalod.pdfIn PDF document text
- http://pzhjintai.com/upload/files/35388591053.pdfIn PDF document text
- https://izyskately.ru/foto/ck/files/59552211773.pdfIn PDF document text
- http://bytip.net/filespath/files/20210914080916.pdfIn PDF document text
- https://cheesykeju.com/contents/files/88906948961.pdfIn PDF document text
- http://7166867.ru/ckfinder/userfiles/files/7828583606.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_off0000adbc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xADBC | 10708 bytes |
SHA-256: ec83e42fd375acc2349969111ea68eecfa04784e7a273c6c1f8de66b947d7816 |
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font_01_sfnt_off0000c667.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC667 | 14568 bytes |
SHA-256: 9412822ba02edc5b51c5ab4a3e3417f513dd157a7a96ad2a3227c92b89c66c84 |
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font_02_sfnt_off0000eabb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEABB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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