MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains a link farm pointing to multiple PDF files hosted on compromised WordPress sites, suggesting a phishing or malware distribution campaign. The presence of invoice and callback lures further supports a phishing intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/dfce8aaf115c0d551548b05f802093b3/69487608752.pdf
- http://asustainable.com/global/file/xamawejudaxivefemofed.pdf
- http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/7db16af2b8e2fcf08fa0c0bbc0206170/bibesibarinonebesamapasa.pdf
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebe55575be---21980445938.pdf
- http://studiotecnicopinto.it/userfiles/files/51351819360.pdf
- https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/c6r191vd1ahg9ahs8j3cth3rgm/xifufudel.pdf
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16098ddbb1832d---14004123554.pdf
- http://benardoutlite.com/admin/fckeditor/fckdata/file/91538728345.pdf
- http://firewheels.pe/userfiles/file/koburozigujemori.pdf
- https://accesoriosalmayor.com/images/userfiles/file/jalosalutomefixug.pdf
- http://dobre-jaja.com/Upload/file/vosixonalumit.pdf
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a65bfca23a1---1522951835.pdf
- https://www.hmgfinance.com/ckfinder/userfiles/files/kafokupadilufewolazumane.pdf
- https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e2dc4d911da---zuwigamoxoti.pdf
- http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4822bca391---moxosexabepigub.pdf
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160781548a4e5d---41819958795.pdf
- https://vinacoma3.vn/userfiles/file/miwepu.pdf
- http://123dvere.sk/files/file/6471637642.pdf
- https://eliteplacementagency.com/uploads/files/sazabuwagokav.pdf
- https://peoplesmodelinternational.com/ckfinder/userfiles/files/gijirajoxusirufetubixo.pdf
- http://erictex.com/ufiles/files/rologirubobuvufajuzewafi.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=sample+reminder+email+to+employees
- 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_off0000eb9f.binc1e9bacfa808badfe474446c67c281c2500e14007db662d390b6f82f42121751 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB9F | 10744 bytes |
font_01_sfnt_off00010442.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10442 | 16792 bytes |
font_02_sfnt_off00011c54.bin47b8c3a77c936bc88065e7af653b0cb8ee1f8396e0e2aa0f56c206e130c25251 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C54 | 17212 bytes |
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