MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged by a machine learning classifier and ClamAV as malicious. It contains a link farm pointing to potentially compromised WordPress upload storage and other disposable hosting sites, suggesting it's part of a phishing campaign. The document's structure and heuristics indicate a callback phishing lure, where users are prompted to call a phone number for fake issues.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
Heuristics 7
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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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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://bamor.org/userfiles/file/75245910603.pdf
- https://chung-pei.com/userfiles/file/42367819669.pdf
- https://matratva.in/userfiles/file/46576774232.pdf
- https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/d804efa1a00c9365ca950df5dceac51d/10311220069.pdf
- https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/161425d89e567e---80318603719.pdf
- http://ebd.su/UFD/7623/files/21623743480.pdf
- http://bursaceyizgelinlik.com/images_upload/files/samifovosizadi.pdf
- http://cambridgekapurthala.com/damana/userfiles/file/katuvazu.pdf
- https://mytshirtcreator.com/app/webroot/files/file/47970917594.pdf
- http://hoaiduc.edu.vn/ckfinder/userfiles/files/dumexosikopit.pdf
- http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/161378192a6627---62109611618.pdf
- http://tamtamphat.com/upload/files/zilebudanu.pdf
- http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613894d64dabf---deguxipesoramenanisefitun.pdf
- https://mariapolis.net/ckfinder/userfiles/files/90745623005.pdf
- http://dellalontra.it/userfiles/files/33184270171.pdf
- https://rockyhotelsgroup.com/uploaded/files/73508916068.pdf
- https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/d1717e350b04ef21fdf4c317e4bce2ff/fokelofomafepugolomaz.pdf
- http://frigotechreina.com/userfiles/files/teruro.pdf
- http://glttek.com/userfiles/file/xorul.pdf
- https://siahotel.com/userfiles/files/32030375883.pdf
- https://salwangurugram.com/files/sivavave.pdf
- http://ltptech.vn/uploads/userfiles/file/fosodoxefokeverole.pdf
- https://plasy.com/uploads/file/22409439906.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=doe+email+office+365
- http://alessandrotria.altervista.org/areap/ckfinder/userfiles/files/regogibope.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_off0000cd5f.bin0e1e9fd197d9edf84472402acc0aa0996fb29f1a6c14fc1fc2086c14979a012a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD5F | 17524 bytes |
font_01_sfnt_off0000faa4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAA4 | 16792 bytes |
font_02_sfnt_off000112bb.bin83efab674727d787adf51e7ca3976730c68c46fe1c7cf47c4580c103d1687f74 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x112BB | 10504 bytes |
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