MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers 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 domains. The presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest a phishing or SEO poisoning attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 6
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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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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://www.cpnatacao.pt/backoffice/ckfinder/userfiles/files/xelar.pdf
- https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613713c9b1ba7---bojafupogifol.pdf
- http://archiw.bibliotekalesmierz.eu/img/upload/files/38608353769.pdf
- https://muzeumkonstancina.pl/attachments/file/fivonuwe.pdf
- https://gkscam.com/userfiles/file/jeduzeveg.pdf
- https://rosedreamholidayhomes.com/ckfinder/userfiles/files/42763407540.pdf
- http://creaorganization.com/depo/sayfaresim/file/pozizugumo.pdf
- https://anukulagrotech.com/userfiles/file/fabisuwozeparasete.pdf
- http://www.annaleehuber.com/content_files/file/borawofateruredilevenumu.pdf
- https://mami-m.com/Uploads/userfiles/files/liluxedekawupemenisuniwos.pdf
- https://kimcert.net/E/file/duvotubisuvivep.pdf
- https://ahreco.com/uploads/news_file/78667158477.pdf
- https://www.ruchya.com.tw/upload/files/17906631449.pdf
- http://apsencollege.org/test/fckeditor/file/rogewamejobupezorobafif.pdf
- http://preiss.at/upload_files/files/75403890426.pdf
- https://jamuiboe.com/webroot/upload_media/koputogelamum.pdf
- http://atut-biuro.com/uploaded/file/mukosuxalarezigipoj.pdf
- https://kaparatt.com/images/File/gazafasasoxipulemula.pdf
- https://hobbypet.cz/files/file/pagifukopabora.pdf
- https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/161374bbf100de---wusularamobagewumumasabuf.pdf
- http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/b7ff243ae6e24db2819d94abd60da3b7/lagewutirobifevulexuw.pdf
- http://bukharaatlanta.com/sites/default/files/file/dumove.pdf
- http://doo-san.com/userfiles/file/20210905180319.pdf
- http://yztools.com/images/upload/File/napujujazeg.pdf
- http://ageddfjtj.pretty-match.com/upload/files/31880553552.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=fashion+illustration+tutorial+for+beginners+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_off0000d6a4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6A4 | 16792 bytes |
font_01_sfnt_off0000eebb.binea8b681fb61581352d5ea8302e2c3954ce288621676e5bb8bed986e6daf89587 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEBB | 10992 bytes |
font_02_sfnt_off000107be.bin654f0190ef188c7948b9d18fe44568c26491ccd50e4a62e7ca545e13dd0e083c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107BE | 16660 bytes |
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