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 many URLs pointing to compromised WordPress sites. The presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic suggest the document's primary purpose is to redirect users to potentially harmful websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://queure.ru/uplcv?utm_term=tasker+auto+reply+sms
- http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16132d0ba0380b---10075258485.pdf
- http://ideviceplus.nl/app/webroot/files/userfiles/files/davaveviduwiretu.pdf
- http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/161400825aa198---sinitebokikewi.pdf
- http://rybarict.cz/webpagebuilder/ckfinder/userfiles/files/77442853292.pdf
- http://z-i-f.ru/userfiles/file/11325105248.pdf
- https://confetti-seasons.ru/upload/files/38435973016.pdf
- http://birkhoffhi.com/userfiles/files/39835412475.pdf
- http://ohana1bbq.com/uploads/files/78872720267.pdf
- http://twtime.com/uploads/files/202109090744201466.pdf
- http://bbbo.handyfriendship.com/upload/files/wamidutu.pdf
- http://diskacme.dk/images/upload/file/2293816231.pdf
- http://drivescuolaguida.it/userfiles/files/70022843150.pdf
- https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/qjase8d34juclupq55vb2hjtl2/3189640182.pdf
- https://lesrimaudieres.com/images/uploads/file/xiwasisosunitezejuz.pdf
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/7b5kji5s9i03th3fetpio46f3s/mulemabawabukixixonemura.pdf
- http://quetthe.com/upload/files/49653322732.pdf
- https://xn--80aaijz0c.xn--p1ai/ckfinder/userfiles/files/46480318159.pdf
- https://jakspravnenapsa.cz/userfiles/file/96053019002.pdf
- http://piazzademarini3ge.com/userfiles/files/sexawedukamosesole.pdf
- http://mobilahomedesign.com/userfiles/files/23618684880.pdf
- https://szelvedojavitasmiskolc.hu/files/files/32788731244.pdf
- http://palyavalaszto.hu/teszt/upload/file/96188685212.pdf
- http://benthanhsgfarm.net/images/uploads/files/wazutiromenegutokisanuti.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d7e3.bin8804c3d00c8c5e3a62e90ca0db805efbc1ae48e0542565fba46615ac96aca13c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7E3 | 10484 bytes |
font_01_sfnt_off0000efe4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFE4 | 16792 bytes |
font_02_sfnt_off000107f6.bina8c33bd4880f55a312b4153fcfc24c0f820039e3853de2f9dbe5234c63d9501a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107F6 | 19240 bytes |
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