MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to compromised WordPress sites acting as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading a secondary payload via the deceptive links. The presence of embedded JavaScript suggests an attempt to exploit PDF vulnerabilities or redirect users.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 8
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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 https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/1aac8e944af12337e203ca554e218b4a/3258944254.pdf
- https://cobrawire.com/userfiles/files/reruxekijabadovur.pdf
- http://coumert.com/images/file/vuboxosur.pdf
- https://haciendaloscipreses.cl/upload/file/dobarinebefokidekez.pdf
- https://rtaadmin.mrv-educationservices.com/content_file/files/mozemotozawozovonuroges.pdf
- http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136760e7c0b7---8357745947.pdf
- http://ezclasssites.com/var/wwww/dev-ezclasssites-com/data/files/zavixaveselipexavizek.pdf
- http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16143e6fc3ca1c---deniboxufenuga.pdf
- http://fatimaartwork.com/userfiles/file/rudofusozofusunowor.pdf
- https://www.liftechforklifts.com.au/application/third_party/ckfinder/userfiles/files/32621516194.pdf
- http://allgeology.ru/ckfinder/userfiles/files/tikinawaputaxugenuda.pdf
- http://www.nbc.com.vn/ckfinder/userfiles/files/8568519911.pdf
- http://zhouzhuanx.com/v15/Upload/file/2021917221683570.pdf
- http://riviera.az/userfiles/file/nifutulo.pdf
- http://kalikraft.com/images/file/bomirumanalewiwoza.pdf
- https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161445b75183b3---64732239312.pdf
- http://strahyi.ru/images/file/bexipudugofiwobesasok.pdf
- https://impeka.lt/components/com_mijoshop/opencart/image/data/files/3416205209.pdf
- http://soepcentrale-dekeyser.be/userfiles/file/74670893727.pdf
- http://thietbiantoanttk.com/uploads/files/judofanijufewo.pdf
- https://e-tta.com/app/webroot/userfiles/files/gemozopito.pdf
- https://apaman.ti-am.jp/js/ckfinder/userfiles/files/gimasikunezan.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=walking+dead+season+1+unlock+all+episodes
- 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_off0000de05.bin6aa3631ec9a8190cbb14d2f0be8ee3c3f2ee375662d9ea00ef9d1fb9b8e17f37 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE05 | 18288 bytes |
font_01_sfnt_off00010db2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DB2 | 16792 bytes |
font_02_sfnt_off000125c9.bin477213b2a186f3be68a18544663b652a9a2bebe02b928450aca9f1220c6af7ad |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125C9 | 10728 bytes |
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