MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution attempt. The presence of a 'download button' heuristic further supports a lure-based attack pattern. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to download a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://synerhu.ru/uplcv?utm_term=cisco+assessment+test+answers
- http://taispacedesign.com/upload/files/befotexaroden.pdf
- http://www.biosafety.biz/ckfinder/userfiles/files/60815363740.pdf
- http://www.prodomasa.com/ckfinder/userfiles/files/jopetizotenegov.pdf
- https://www.hemoroidklinigi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d4da1a715d---70229757440.pdf
- https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/ca94ee1e7f1d24a767b790301a013c1e/batekobabivilewedanaza.pdf
- https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16094bd06620b9---66133371773.pdf
- http://odessahighschool1970.com/clients/7/70/70263b1be1b93b62200e198143f59f20/File/wilogasolurozepemetibe.pdf
- http://jinanxintiandi.com/userfiles/files/donupepezujebixerakofofi.pdf
- https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/30dfa829957da4476a42e27d8d44eefc/warux.pdf
- https://silga.ca/userfiles/file/28461981383.pdf
- https://taiwancy.com/app/webroot/userfiles/files/molamidivunuvegug.pdf
- https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608674d45e85a---34248210913.pdf
- https://manuscripthandler.com/userfiles/file/77588168228.pdf
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5ba83e33070eb7bcf8525e1db6f30c77/44127749285.pdf
- https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/35a4f17520f89d60796a4419929da190/vifajorunakikinexelof.pdf
- https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/ece887102a7f330b0cdb6f0fe06e7120/dudebasu.pdf
- http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ae3915b4fda---29208276608.pdf
- http://m-styleauto.com/js/upload/files/vuludarejiso.pdf
- https://gertiesbloomers.com/kousumi/nulook/upload/fckimages/file/pidokilawotejalivino.pdf
- http://woorymart.com/userData/board/file/7317642717.pdf
- http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/1f02e7951dcb67758a2aa94d2d0a8f72/pakefofonajopajotukezex.pdf
- https://adepotcustom.com/UploadFiles/file/20210506021602146.pdf
- http://softwarefactory.nl/images/file/84268592959.pdf
- https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d23efa99ec3---40638706554.pdf
- http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a44c806d0eb---zerekixovi.pdf
- https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/8f900dfa0defc7dec88d30a7ee2e1972/7072926486.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_off0000c114.binb7825af7fcf064a6aee8572c8476d23afdba6bd82068124bc726f0c0f009715a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC114 | 15844 bytes |
font_01_sfnt_off0000e9c3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9C3 | 16792 bytes |
font_02_sfnt_off000101da.bin79ec88ecae440e700deceb1421bee0d0d74e8d3aa84f83bc45b4e249f0c95f08 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101DA | 10464 bytes |
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