MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure strongly suggest a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9746
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://infrive.ru/uplcv?utm_term=another+name+for+heparin PDF link annotation
- http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/nizopamerogigenoba.pdfIn PDF document text
- http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/rrmn2no5pds8sa91f2qlat8t84/vosexugojufuxejepedi.pdfIn PDF document text
- https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/ad9672e202771684bcda4d99ab1894a5/13632371249.pdfIn PDF document text
- https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/42bd63d191779181a5ae38d46cd6c6e4/77266127439.pdfIn PDF document text
- https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/k66r4ef8octvfh25al9fk3tc5t/55331037325.pdfIn PDF document text
- http://sskj.pl/userfiles/file/jesijilutavulunaxojez.pdfIn PDF document text
- http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdf1192781---najizuxepekinitowata.pdfIn PDF document text
- https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608253b7477a2---12813796396.pdfIn PDF document text
- https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/ca9d646f3730253ee06438edeeea3b8f/61057261370.pdfIn PDF document text
- http://thanuyentea.com/ckfinder/userfiles/files/19989071325.pdfIn PDF document text
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088a851aa862---43202418284.pdfIn PDF document text
- http://mudrkanuch.sk/editor_uploads/system/files/gawerilabapudemo.pdfIn PDF document text
- https://longhoang.vn/upload/files/fikifadusupimeduxenasolep.pdfIn PDF document text
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/3de589254c5064a04f74c3d3ad31cbb0/beraxafefukax.pdfIn PDF document text
- http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160cb54260cdbb---wazilojogema.pdfIn PDF document text
- http://bukharageorgia.com/sites/default/files/file/20437535367.pdfIn PDF document text
- https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/4d1ffb5bdbeda69cda0e810a51366b48/mexarixemigobarurukomoga.pdfIn PDF document text
- https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/odpgp1lj77aqgl1h11458cfsu6/85287227832.pdfIn PDF document text
- https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/efujjtjtf3aooqiimm0eii2l3i/kagujox.pdfIn PDF document text
- http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/i5i3g882huin7igpht4eh43vf3/98059667001.pdfIn PDF document text
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160c4bdab3e956---ruzupujiremakibowo.pdfIn PDF document text
- http://sjhrz.com/images/upload/File/mejipukefokefopinena.pdfIn PDF document text
- http://techsystem.gr/data/uploads/ckeditor/files/vajegefesinuwobufu.pdfIn PDF document text
- http://susanirvine.com/clients/82887/File/11371025447.pdfIn PDF document text
- https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/2275ff5407568a320037c485a7499322/lakojux.pdfIn PDF document text
- http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a804840b75a---34660172018.pdfIn PDF document text
- https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/12694161429.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f0e1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0E1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000108f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108F2 | 16252 bytes |
SHA-256: bfc7ce51a1a9b37382af61f0075eb0cdb972126da031002d338643432d80e6e4 |
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font_02_sfnt_off00011ece.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11ECE | 16860 bytes |
SHA-256: 6de43b0103bbc41f60b6cbf498cab7ea51acac9d2d7f09071db490e89b0d5b55 |
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font_03_sfnt_off00014ab1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14AB1 | 10392 bytes |
SHA-256: 22e32699be506ea9d242d4ec06f8296e30ac9ace9ea03fd8e579bf3228dd7c56 |
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