MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The 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 CMS upload directories, suggesting a distribution mechanism for further payloads or phishing content. The PDF structure itself does not contain readable content, but the embedded URLs are the primary indicators of malicious activity.
Machine Learning
- Nyx PDF Classifier malicious score 0.9903
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 http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0be6da32ad---454623192.pdf
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16082d633dd53b---xifisovewelejatija.pdf
- https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/bfb9mds6oaivr4p0a3ejhjhgr1/depemu.pdf
- http://phuwangnam.com/user_file/file/28063387281.pdf
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/307s6p8q27j3qqhc4dt5iukvaq/98705532612.pdf
- https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/fq636hdgs1lgleqi239lvujprv/74008465442.pdf
- http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c04db681dfb---wozelivobabut.pdf
- https://e-uchebnici.com/img/file/lapavufiduvan.pdf
- http://aiswaryamatrimonials.com/fck_uploads/file/leremezular.pdf
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b927af3e963---35723022512.pdf
- https://clubelsendero.com/img_pag/file/jorakage.pdf
- https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/390e097b6aca65be888db3a94adfa0fd/wafokosujalila.pdf
- http://zap-interactive.com/uploads/files/guwisojuxudozejubim.pdf
- https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/dinr42lnqljq6tt5n6apa0q030/powaxuwexexujefoz.pdf
- http://reszke.pl/fckeditor/editor/filemanager/connectors/php/file/texekejatuv.pdf
- http://nhs1966reunion.com/clients/1/1c/1ca8f1639ee69cd7806809ed3bcda9bb/File/60910830291.pdf
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/16081c12477e76---gesijufanefinamep.pdf
- https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16089b36f9cc85---89716763663.pdf
- https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/4a709c2fd4c69aa89cbf6d28784205e1/tivajixigujoriw.pdf
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1606f471191a43---97711073906.pdf
- http://exmar.it/foto_fck/file/tagitowozigisufidosibitus.pdf
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/2b3ue07gtcrqeqen2ph9a8v7c5/dalisu.pdf
- https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/3f2c90c6cee3e0341e487d0d8aa8b063/26028422362.pdf
- http://talleresjpg.es/img/file/82161703542.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=debussy+for+kids
- 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_off0002072c.bin454c0193a967a6602d6114e2ba8ab8a69bc5bf11f428543edadf41db30eb53cd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x2072C | 20612 bytes |
font_01_sfnt_off000239ca.bin16e8e3b15a1d7993a5302a12f6a57ba384cb07daaa5ce6bb271d15ea265d961d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x239CA | 10384 bytes |
font_02_sfnt_off00025171.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x25171 | 16792 bytes |
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