MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised or disposable domains, suggesting a link farm designed to redirect users to malicious sites. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics further support this, indicating a tactic to obscure the true destination of the links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9939
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://stephankeppel.com/userfiles/file/kulirokigazetasiput.pdf In PDF document text
- https://i-intelli.com/ckfinder/userfiles/files/24762383704.pdfIn PDF document text
- http://inistor.com/ufiles/files/bemelufevilukibit.pdfIn PDF document text
- http://multi-accueil.fr/ressource/site-image/files/zotasojewa.pdfIn PDF document text
- http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ac25da7d69---56594235427.pdfIn PDF document text
- https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/16153b2b7e9f44---22053181996.pdfIn PDF document text
- http://ocean-ex.com/images/blog/file/sobuto.pdfIn PDF document text
- https://blsautomation.com/ckfinder/userfiles/files/vozuvelunitesow.pdfIn PDF document text
- https://promise-land.com/upload/file/43182776710.pdfIn PDF document text
- https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/16410ab1911afbce00f077aa804bb65d/vanepapexajawu.pdfIn PDF document text
- https://people11people.gr/uploads/File/sivevexawanapomus.pdfIn PDF document text
- http://hide-bo.com/img/tmp/file/30300325197.pdfIn PDF document text
- http://ammk.sk/userfiles/file/wisub.pdfIn PDF document text
- http://kesherisrael.com/uploadEditor/files/7927768861.pdfIn PDF document text
- http://star-transform-moscow.ru/uimg/files/junojub.pdfIn PDF document text
- http://nhatngungoisaoxanh.com/upload/files/50729688675.pdfIn PDF document text
- http://xn--e1aazeoc7d.xn--p1ai/images/shared/file/51827963881.pdfIn PDF document text
- https://badeluxe.com/userfiles/files/48287619660.pdfIn PDF document text
- https://cupanghitam.com/contents/files/vitiponusi.pdfIn PDF document text
- https://fajndoktor.cz/images/file/files/zokizaduwadud.pdfIn PDF document text
- https://mttrasportisrl.it/dati/upload/file/37903895221.pdfIn PDF document text
- http://chemicalengineers.ie/images/80120656330.pdfIn PDF document text
- https://karthikaspices.com/uploads/file/jopefejiligegobedojo.pdfIn PDF document text
- https://bczenekar.hu/files/file/44468940458.pdfIn PDF document text
- http://satakantaresort.com/user_img/files/lokudugilidumas.pdfIn PDF document text
- http://av-jet.ru/userfiles/file/97275131867.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=kinetic+energy+in+rotational+motionPDF link annotation
- 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_off0000b8f6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB8F6 | 18624 bytes |
SHA-256: 3b51fd4b6a0423a35fd9be4605efc046bf40cf0b034bdbf0902545e74e025e39 |
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font_01_sfnt_off0000e894.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE894 | 10508 bytes |
SHA-256: 683718e4f0d6a950cd9263b19b02179ab1007c1b8466dc038d25ac57c732ca53 |
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font_02_sfnt_off0001007e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1007E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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