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 pointing to compromised or disposable hosting, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection strongly suggest this PDF is a phishing or malware distribution vehicle. The embedded JavaScript likely facilitates the redirection or execution of further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://pistant.ru/uplcv?utm_term=top+single+player+games+2021
- http://dienlanhhuubinh.com/upload/files/kugavetusudijodokosezuju.pdf
- http://petraifevronii.ru/ckfinder/userfiles/files/23498534935.pdf
- https://szallas-karpatalja.net/upload/50578243326.pdf
- http://bmcnx.com/userfiles/file/zapaso.pdf
- https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/161429e18d5f9c---96771269862.pdf
- http://njxinbell.com/upload/files/18393532496.pdf
- http://geodeslaboratori.eu/userfiles/files/98476504334.pdf
- https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613781bf2d636---xuvofiwemigaxoxativir.pdf
- http://szintai.hu/ckfinder/userfiles/files/71152109666.pdf
- http://china-zub.ru/userfiles/file/bexeto.pdf
- http://ultraljud.nu/bild/files/pufilibegutidenazo.pdf
- http://www.cpiequipos.com/assets/images/user_files/files/56458115172.pdf
- https://soi.icami.mx/ckfinder/userfiles/files/lakagavetijag.pdf
- http://serdceprirody.ru/userfiles/file/54723157679.pdf
- http://macierz-grodziec.org/files/file/60916777565.pdf
- http://supair-lux.hu/ckfinder/userfiles/files/14960747722.pdf
- https://lifecareproduct.in/ckfinder/userfiles/files/85910809084.pdf
- http://webcertain.asia/contentupload/fckeditorUploads/organization_/file/ludipa.pdf
- http://tw-echen.com/uploads/files/202109220355464916.pdf
- https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/161439ba7e10f7---dibobetisasikodone.pdf
- https://beaszemin.com/files/71498194807.pdf
- http://antracit.topmebli.com/content/xuploadimages/file/zixaguwenuwutexubafa.pdf
- https://autoprofi.ua/userfiles/file/54995308700.pdf
- http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614c9c1048c8f---kolakabogimurefogoketu.pdf
- http://www.cst.rnu.tn/js/ckfinder/userfiles/files/norawavoxen.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_off0000dd7f.bin78e125f8f1c8335acc0dad8a9fdefc82727cebb8ca12ced7e896642fe7f6092a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD7F | 17756 bytes |
font_01_sfnt_off00010ba7.bina65c719aae9daa6b4d1266f1deb2367f2fbd9103db2589588e24ca86160cb02c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BA7 | 10868 bytes |
font_02_sfnt_off000124db.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x124DB | 16792 bytes |
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