MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains numerous links to compromised WordPress upload directories and other disposable hosting, suggesting it is part of a link farm designed to distribute malware. The presence of a 'download button' heuristic further supports the intent to trick users into downloading a malicious payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130417d4f6c6---majuweginozokod.pdf
- http://anhuishangbiao.com/upload_fck/file/2021-9-13/20210913091653229208.pdf
- http://kwiatmetal.pl/userfiles/file/53651437240.pdf
- https://cailux.lu/userfiles/files/24270756724.pdf
- http://limeitec.com/upfiles/editor/files/85084362519.pdf
- http://nachhilfeschule.havonix.com/ckfinder/userfiles/files/tezexirozufipikopibi.pdf
- http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/23329225177.pdf
- https://luathoanghuy.com/uploads/files/13892905566.pdf
- https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/4421ae906037d1c7b3fd2d1020784aad/81729463392.pdf
- https://francoisdaulte.com/ckfinder/userfiles/files/gudemikipinigedaten.pdf
- http://pmrs.ps/userfiles/file/45554614656.pdf
- https://galaxytraining.examinationonline.com/files/54900854564.pdf
- https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613f0afbd2bfb---xukebeb.pdf
- http://studiomarcheluzzo.it/userfiles/files/purav.pdf
- http://www.anclupnapoli.it/userfiles/file/48605972899.pdf
- http://koslita.eu/ckfinder/userfiles/files/vagidisejoweb.pdf
- http://sushiloverca.com/uploads/files/gavamedasuxigorudewer.pdf
- https://skywaytravelandholidays.com/ckfinder/userfiles/files/mogomemadawufomexapiz.pdf
- http://mrspk.com/ckfinder/userfiles/files/gisevolebolerubafenopolib.pdf
- http://ecoevopublisher.com/files/upfiles/file/xedalawara.pdf
- http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161435d7fe0db3---31978973958.pdf
- http://tajesink.com/Uploadfiles/files/suxebozodemojegikopod.pdf
- http://cimkezes.hu/uploads/ckfinder/userfiles/files/91540066497.pdf
- http://agierresrl.it/userfiles/files/dunuguwewajitez.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=talking+tom+run+mod+apk
- 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_off0000dc7b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC7B | 16792 bytes |
font_01_sfnt_off0000f48d.bin06b76c11046137e7b5bb7566fd35cf7a38b7e579f36ee1c18255160896afb879 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF48D | 17540 bytes |
font_02_sfnt_off000121c0.bin94986b3870a67a6e609888c62d52e56c2192302200631a1949768117fea9666a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121C0 | 10592 bytes |
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