MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external links, many pointing to compromised CMS uploads or disposable hosting, indicating a phishing or malware distribution attempt. The 'Image-only document with action trigger' heuristic suggests a common lure technique where a visual element hides clickable malicious links. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 8
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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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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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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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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://aptekarynek.pl/zdjecia/fck/file/28434129523.pdf
- http://a-pro-peau.fr/userfiles/file/fibodorekutasibu.pdf
- https://projektovanje.info/userfiles/file/tuzofu.pdf
- http://xn--80aejmo0alc.xn--p1ai/ckfinder/userfiles/files/tosepawavepurisodipo.pdf
- http://gmicropilotes.com/uploads/files/furep.pdf
- http://yuqiaohome.com/uploads/files/202109220407049283.pdf
- https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/k6hf3vfad268afmarus4s94tqo/8028300869.pdf
- http://a-b-i-s.net/layout/bilder/file/zebenigezosisapaziwak.pdf
- https://cosplay-expo.it/ckfinder/userfiles/files/waxezitogofik.pdf
- http://linuxnewyork.com/draft/media/43728212824.pdf
- http://www.ville-civaux.fr/admin/js/ckfinder/userfiles/files/mufigodedefafitutatedim.pdf
- https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16149ed5b1f818---20894497140.pdf
- http://bk-plus.at/userfiles/files/besojedibatubox.pdf
- http://studiofranzoni.eu/userfiles/files/mitenidunafuvomixisiser.pdf
- http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fe205f3f95---zopevajazopekaket.pdf
- http://medeeatour.ro/mm/file/xosatobosev.pdf
- http://moskvaznaet.ru/upload/files/fezeguxirujabapaw.pdf
- http://talleresjpg.es/img/file/97249230123.pdf
- http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/161372f03a4272---65294280545.pdf
- https://bi-kiesabbau.de/cmsimple/images/file/73224758445.pdf
- https://bosingels.nl/ckfinder/userfiles/files/8134729571.pdf
- https://thaiwoodengames.com/files/upload/files/mebuzipusawo.pdf
- https://ismet.com.br/ckfinder/userfiles/files/24769360640.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=six+thinking+hats+technique+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_off0000b297.binf49b91f60600951ddf252b15cbd38dd655b2957bc37aca500efd7be6d1f4f014 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB297 | 14380 bytes |
font_01_sfnt_off0000d65e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD65E | 16792 bytes |
font_02_sfnt_off0000ee75.bin1e942f195c46c8025b400dfa797161163799bf03f4c65600a254ffa26d243a79 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE75 | 11148 bytes |
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