MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs that point to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of these links and the overall structure indicate an attempt to distribute malware or conduct phishing attacks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9988
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://synerhu.ru/uplcv?utm_term=i+trust+you+meaning
- https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609670c374477---wubakamunonuwawemafi.pdf
- http://snypes.nl/img/customer//files/wanobizinaj.pdf
- http://sparan-art.ru/ckfinder/userfiles/files/20230125369.pdf
- https://tekdalyapi.com/upload/ckfinder/files/95629695697.pdf
- http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbee6111dab---42904414299.pdf
- http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e62d6d22ea---92046401336.pdf
- http://tercovci.cz/files/file/rapovevigeganazupora.pdf
- https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/d0fa80ade79af835c58749565b48e06d/puragewopabuv.pdf
- http://tv-kitchen.ru/files/files/zebanuwesukabazofu.pdf
- https://tekmaker.com/upload/files/39497755718.pdf
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160966ee83a15d---tuvipotujavejikozaso.pdf
- http://titusauto.hu/kepek/file/65929849097.pdf
- https://apotekatia.ba/fajlovi/91089660080.pdf
- https://bursakaynak.net/userfiles/file/12153945759.pdf
- http://mankatomnclassof71.com/clients/e/e0/e0e8961458839910853a12af65841b27/File/letabezaze.pdf
- https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608aea6f05bfa---93642634932.pdf
- http://www.findvoters.com/userfiles/file/90295703911.pdf
- http://atenngo.com/admin/sites/site/documents/gejudegisosoridupibeneju.pdf
- http://oumkua.com/userfiles/file/mimovobewakinima.pdf
- http://cnc-soustruzeni.cz/files/file/25861648309.pdf
- https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/ueivtesrvt6oomhrluqna10i2f/xavetapipaderetubufisagu.pdf
- https://prokoncept.hu/admin/blogfck/image/file/dakerobagubugemajegumidi.pdf
- https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/ce816fa90d29e361d2f638d59fc1c962/vepefagimupaloxiv.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_off0000d936.bin49877fdeef459a8ab345756f758591be7470c9d9baa78e14b723890a9bb11796 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD936 | 16784 bytes |
font_01_sfnt_off0001042e.binbf7a421f7e7eb28fa6c8eaf5d2ebbcf7ab8182c6441167ebb627ae07c69c73ee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1042E | 10568 bytes |
font_02_sfnt_off00011c5c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C5C | 16792 bytes |
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