MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple potentially compromised or disposable hosting sites. The presence of numerous PDF links and the 'utm_term_redirector' flag suggest an attempt to obfuscate the true destination and potentially trick users into visiting malicious URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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 http://tries.cz/media/images/upload/file/kenojipawapovowebejati.pdf In PDF document text
- http://nhagiatxanh.com/public/default/ckeditor/files/63867019219.pdfIn PDF document text
- http://jinanxintiandi.com/userfiles/files/tesekipuxazo.pdfIn PDF document text
- https://volgogradexpo.ru/ckfinder/userfiles/files/44266898147.pdfIn PDF document text
- https://mahae.hu/files/files/detafalazuwukega.pdfIn PDF document text
- http://webmba.fr/client/logo/file/50902527350.pdfIn PDF document text
- https://sausalito.com/wysiwygfiles/file/21373897616.pdfIn PDF document text
- https://bnovum.hu/downloads/fofatasetawebumigo.pdfIn PDF document text
- https://nabijdefossa.nl/upload/files/vimixuwamelame.pdfIn PDF document text
- http://childconnect.com/swi/fckfiles/file/gojogomosixepi.pdfIn PDF document text
- http://mwcapital.net/ckfinder/userfiles/files/sibikewo.pdfIn PDF document text
- https://macroedunet.com/userfiles/file/7205576290.pdfIn PDF document text
- https://bandotrading.com/uploads/file/sumelozitufekutugigutu.pdfIn PDF document text
- http://standardamulet.com/files/files/tolexiwobufe.pdfIn PDF document text
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/161417a5c687eb---wutojubegasoxokolibeponak.pdfIn PDF document text
- http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1613c5de78d8bf---wifipimixokonenodekad.pdfIn PDF document text
- https://baigiangtoanhoc.com/upload/files/27712896074.pdfIn PDF document text
- https://www.bosingels.nl/ckfinder/userfiles/files/famimanob.pdfIn PDF document text
- http://kursadowicz.pl/Upload/file/lawiparog.pdfIn PDF document text
- http://bjsddesign.com/filespath/files/20210908153657.pdfIn PDF document text
- https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613116243ac6e---72951934151.pdfIn PDF document text
- https://cs168.tw/upfiles/editor/files/88917616265.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=laser+pointer+app+for+phonePDF link annotation
- 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dd71.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD71 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f588.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF588 | 10368 bytes |
SHA-256: a3aef9936c50b72292d91ff8427e2859e722796fa3c588c155f1d1b7ee0a3baa |
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font_02_sfnt_off00010cda.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CDA | 18564 bytes |
SHA-256: e408f4528b30a10482ce79801c235eb10a2cd88761fa4fd925b6feab2767f898 |
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