MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed for phishing or malware distribution. ClamAV detection and ML classification strongly suggest malicious intent. The embedded JavaScript likely facilitates the execution of further malicious actions.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 7
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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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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 https://synerhu.ru/uplcv?utm_term=best+strategy+games+android+2020
- http://narnivet.com/userfiles/files/71268943999.pdf
- https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/16132fde3b5b95---dakisolubetar.pdf
- http://tcsm62.org/uploads/news/file/voxajidolopitix.pdf
- http://serextion2006.com/js/upload/files/18917573436.pdf
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/b233babd50bfac27fc361e8723803856/badalodekuxuwavizo.pdf
- https://siksp.megarhizo.com/ci/userfiles/files/fifiz.pdf
- https://gruppopolidori.com/upload/image/file/gobise.pdf
- http://tacchigroup.com/public/thread/risorse/file/28578097090.pdf
- http://kancelaria-perfect.pl/app/webroot/media/files/47766711736.pdf
- https://b2cexpressdemo.com/userfiles/file/86007537160.pdf
- https://armagedonspedycja.pl/files/file/20664604407.pdf
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/161401ad296aab---jopujonejagiwupajedetol.pdf
- https://ermolino.mebel18.com/uploads/files/jusukaza.pdf
- http://studiotecnicomancini.eu/userfiles/files/gujumavej.pdf
- http://borik.customreal.sk/data/files/77382281218.pdf
- http://fuyu.010bi.com/ckfinder/userfiles/files/nisesoxupunofasojixix.pdf
- https://www.babetravelling.com/ckfinder/userfiles2/files/nosobemumutupojutupol.pdf
- http://khyljg.com/uploadfiles/files/62582029578.pdf
- http://gift-founder.com/archive/upload/files/tujaxokakilejepesifi.pdf
- http://labonscafe.com/userfiles/siriwivofexomegolisodu.pdf
- http://chinalabware.net/d/files/jixixusenobil.pdf
- http://midesignvn.com/uploads/files/33932954563.pdf
- http://capesociety.ca/uploads/files/54751708845.pdf
- https://rockeit.com/userfiles/file/11967038067.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_off0000f859.bin9d8cb111604d5c09ecc8611d5491c30b1163f64554f65119e020bc36dd656361 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF859 | 16760 bytes |
font_01_sfnt_off000123b4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123B4 | 16792 bytes |
font_02_sfnt_off00013bcb.bin4bf245f2fb43203302c3a31bdc99c69783d01487047392f7b173507b5c00027b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13BCB | 10952 bytes |
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