MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users. The PDF structure and embedded URLs are consistent with phishing or malware distribution campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 6
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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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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://jingchengs.com/jingchengs/ckfinder/files/20210901080703.pdf
- http://hiroi-es.info/yamituki-n/uploads/files/37992196519.pdf
- https://wspaperbag.com/userfiles/file/fosiwibonujufinubom.pdf
- http://veiligheidssloten.nl/ckfinder/userfiles/files/27575581095.pdf
- https://smilaxlabs.com/userfiles/files/vitetogatovominudakafuw.pdf
- http://antoniolescio.net/userfiles/files/46739464758.pdf
- https://www.edm-medical.net/ckfinder/userfiles/files/98319242222.pdf
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/fa3d629d3832d7c38bbdbff21cb83470/rulonupor.pdf
- https://cualuoihoanmy.com/uploads/userfiles/file/25776688188.pdf
- http://gat-asset.com/CKEdit/upload/files/39596611571.pdf
- http://kuresi-kaitori.com/upload/content_pic/files/miwifimelivuve.pdf
- https://chungangroup.com/uploads/files/202109060645269844.pdf
- https://shellserva.nl/docs/Image/file/saxusoletosulira.pdf
- http://asia-test.informacittadino.net/media/files/bidufibopudetekazidogap.pdf
- http://vcelari.naceradec.cz/includes/ckfinder/userfiles/files/65726571897.pdf
- http://saeronbio.com/userData/board/file/56980323511.pdf
- https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/bba86f12115dc9561439799cfb0881a9/74907615214.pdf
- http://iucecb.com/files/file/zawevatuxidapurizat.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161425220a0cfd---31251273687.pdf
- http://f-kcc.jp/user_data/userfiles/files/majebixolod.pdf
- https://norservis.info/files/files/36685864492.pdf
- https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/1mqs6f5dm57a9qo2274lgk76mq/risuxijipefamiredivuke.pdf
- https://glbtrader.com/userfiles/file/9270250763.pdf
- https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/d051fea1fbca4031e20ff4fc4c9b89e7/2043066835.pdf
- http://indemo.pl/Image/files/luwitafapexexaxemu.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=toy+defense+2+hack+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_off0000b07d.bine2cd92dc3da3a30848bfb0e0aa18e5f18ce799536e36cef1c331d70450bd2829 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB07D | 14240 bytes |
font_01_sfnt_off0000d44c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD44C | 16792 bytes |
font_02_sfnt_off0000ec63.bind72d2c05d9bcdd505a1d1405523f7a1405e83d1aebbc7854b691dc659a8f1ead |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC63 | 10672 bytes |
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