MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains a link farm pointing to multiple compromised CMS upload locations, suggesting it is used to host malicious content. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, a common tactic in tech-support scams and callback phishing. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score point towards malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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 https://vansuloi.com/uploads/userfiles/file/88802786348.pdf
- http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/16085ba4a96495---pebabalif.pdf
- https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/160899296cccca---fewidiwunapu.pdf
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609fabfadce0d---48741363655.pdf
- http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16080ca983f0e4---vulegunixasozek.pdf
- https://ckmusicdesign.nl/userfiles/file/bazavosilawavu.pdf
- https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/a03a4574836ffd5cd282a6d425d9d43b/wasokajoguwokox.pdf
- http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7e373e5b7b---sororemidadejazuke.pdf
- http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099fae7a7996---mimemopenexavatelininugu.pdf
- http://ruihuitax.com/files/file/6441686337.pdf
- http://jncs.kr/page_data/file/20210603190206.pdf
- http://capri.lt/userfiles/files/91619720027.pdf
- http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160c030e81edb1---54403913237.pdf
- https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/d5a57e4c0df60539d95844aeb64e8a7d/notuzefubivaniluw.pdf
- https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/1df247536579697091c5081eeac3741c/fomediwuvonupoxegugak.pdf
- https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/2maut41aqqeb6id5974tq5fca5/vawivasebiravodesatexepa.pdf
- http://orosweb.hu/ckfinder/userfiles/files/51526930497.pdf
- https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607580bf7f7f6---61298442937.pdf
- http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c87e5818f3d---donevonomikapenadavedenu.pdf
- http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a249ecbd55---37791854041.pdf
- http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ba5a3e3ba37---gokulomavopuzisij.pdf
- https://kvkumariajnkvv.org/singhania/downloads/file/fedadudipigomuf.pdf
- http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16071d06592470---27500223786.pdf
- http://americanewbie.com/userfiles/file/89701925535.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=the+oxford+dictionary+of+english+etymology+pdf+download
- 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_off0000bf4b.binef28738f2882f357fae3bde5c14aa715c75098e891da716c9a854e26753b1c7d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF4B | 15780 bytes |
font_01_sfnt_off0000e805.binb183936db6d08e2359c29e9f4f80c2d3d62181a31cdff2c29f86ca188122808a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE805 | 11332 bytes |
font_02_sfnt_off00010264.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10264 | 16792 bytes |
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