MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains multiple heuristics indicating malicious intent, including a remote support lure and links to compromised CMS upload storage. The ML classifier and ClamAV detection strongly suggest this is a malicious PDF, likely a phishing or trojan delivery mechanism. The presence of numerous embedded URLs points towards a link farm designed to redirect users to malicious content or downloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
Heuristics 8
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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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Remote-support tool lure high SE_REMOTE_SUPPORT_LUREDocument instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://irlanc.ru/uplcv?utm_term=lg+nexus+5x+firmware
- http://villkasz.hu/editor_up/gexosixazunorogonajukema.pdf
- http://finchamauto.com/pics/10932622294.pdf
- http://gintaras.cz/userfiles/file/xevilixobamanerolux.pdf
- http://honyi.tw/ckfinder/userfiles/file/nedodawedokor.pdf
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138129d4f5b4---15196486147.pdf
- http://librojuridico.com/aym_images/files/sujomibox.pdf
- https://techson-cctv.com/upload/file/12567145735.pdf
- http://sgrappresentanze.eu/userfiles/files/5154271359.pdf
- http://arabic.cz/ckfinder/userfiles/files/nefoketidovajumed.pdf
- https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161340c0a6858e---32868595217.pdf
- https://agrocare.ro/ckfinder/userfiles/files/74448841022.pdf
- http://thuonghieutoancau.vn/uploads/files/debidiwepodovibera.pdf
- https://tezerwatch.com/file/upload/files/09-08-17-49-34-10.pdf
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/uei46hfet79bbke77jnr7kg0nd/gejamapalifovuwi.pdf
- https://www.larche-de-jules.fr/ckfinder/userfiles/files/kemazovadunuketogofizif.pdf
- http://findingthegrey.com/userfiles/file/10932677364.pdf
- https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/19ef8648df3da9b03f3d006b8f0131c8/pifubanomuvutaro.pdf
- http://woodlandhills.ilovepokebar.com/uploads/files/84442934877.pdf
- http://fourfoods.com/images/files/xadidakusitijotas.pdf
- http://jiachuankeji.com/upload_fck/file/2021-9-16/20210916123739695053.pdf
- http://omegapizza.net/uploads/files/lanagalixavevakip.pdf
- https://aristi-trap.com/upload/users/files/36006854403.pdf
- http://caogenzhiben.com/filespath/files/20210904231803.pdf
- https://mylin.in/ckeditor/ckfinder/userfiles/files/supijewo.pdf
- http://ifaistos.reality.gr/~triantaf/images/file/gamoku.pdf
- http://proallprint.com/userfiles/files/14270125462.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_off0000e215.binfcdb521ffb4dad409e1f6526375ae71e632eed2de9252b53f376c45f618c96de |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE215 | 10672 bytes |
font_01_sfnt_off0000faa3.bina9f27e39c9bbf1219c3a75796377aa050c9ff33f70734ea726589ca4645c4217 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAA3 | 18028 bytes |
font_02_sfnt_off00012a92.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A92 | 16792 bytes |
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