MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as Pdf.Phishing.Trojan. The document contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of urgency and callback lures further supports a phishing or scam-related attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 8
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://munsusa.org/userfiles/file/20210520030421.pdf
- https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/2181decc2c58680eda173521a2005705/44451332125.pdf
- https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607e8a87c1969---zotanufafaxeritijiweva.pdf
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b4cb54b829---32776054778.pdf
- https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/f9c5270dd877ee7bebb61428afb3adfa/mobejawegegaridadufutodok.pdf
- http://edanieltour.com/FileData/ckfinder/files/20210603_DA5727F851EDA079.pdf
- http://hanhthien.net/uploads/file/tulasut.pdf
- https://www.groupenahno.com/wp-content/plugins/super-forms/uploads/php/files/r72j9luuqaoq89c12iq4n0m17l/jobupigeranelolekukutofo.pdf
- http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160868d027b7a8---nejid.pdf
- http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e326333a7aa---36621460580.pdf
- http://akinmedikal.com/uploads/file/vuvezowaxaravezonup.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609029c16c0cb---46372226258.pdf
- https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bd9b0a3bd75---89484960357.pdf
- https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/d50e47dc530c8d3200cde5f6411ccd6a/gabonejorukejiwevurod.pdf
- http://cn-polylysine.com/d/files/48371073042.pdf
- http://studiogiamberardino.it/userfiles/files/3965476538.pdf
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/745809a4b11648833f641a77a719fd06/53248482305.pdf
- http://mrs-edu.com/sribati/editor/uploadfiles/bowojuno.pdf
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/528a7c04038aeffd15ee8e72fb89e309/taxoxemuragenisobekasebuk.pdf
- https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/0d7cb892d858e31303511ecc174c8d91/30057668540.pdf
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e676342d9e---fefan.pdf
- https://synodradomski.pl/userfiles/file/redurevu.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=remove+info+fastpeoplesearch
- 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_off0000ea4c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA4C | 16792 bytes |
font_01_sfnt_off0001025e.binf37aa45d24e58f73d978fd4e2a758c88c760ecf841b786a2dc8f24d6b2e15876 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1025E | 17204 bytes |
font_02_sfnt_off00012fa4.bin5d0ecf36995c263063c2cefb3d6500d74c62d6dd8070fb029233ece002acfc21 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FA4 | 10856 bytes |
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