MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm pointing to multiple disposable hosts, a common tactic for phishing or malware distribution. The presence of embedded JavaScript and a heuristic indicating a password-protected archive lure suggests the document is designed to trick users into downloading and decrypting a malicious payload. ClamAV detection further confirms its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://krisoc.ru/uplcv?utm_term=how+to+open+zip+game+file+on+android
- http://thibangoto.com/app/webroot/uploads/files/20827515763.pdf
- https://www.informacion-indoorclub.com/boletines/img/file/vugudavikelimu.pdf
- http://johnmarzillier.com/ckfinder/userfiles/files/kupafunupobotipezafo.pdf
- https://aletihad-group.com/userfiles/files/48240710970.pdf
- http://gro-felix.si/uploads/sebasati.pdf
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/161339fd027116---fozewesigajinusij.pdf
- http://joyerialaplaza.com/ckfinder/userfiles/files/bamekigiwixatiliso.pdf
- https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16139b8510ff44---7066077393.pdf
- http://life-worldwide.org/assets/uploads/files/gadagoniz.pdf
- https://www.baust.edu.bd/app/webroot/ckfinder/userfiles/files/kokanibinimujetokuku.pdf
- http://bortran.com/upload/image/file/20210914104337.pdf
- http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/7c6fa1034c01cc751fe2a54eff53d899/tameraxi.pdf
- https://membermimpi.com/contents/files/90159142592.pdf
- http://48bulls.com/js/upload/files/40843776475.pdf
- https://alaqart.atelierleuthold.ch/userfiles/files/35174193505.pdf
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613fdf80c7735---78354052531.pdf
- https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/b035c6caa88737c5231a7c1fd8323153/xajapibixuzopiro.pdf
- https://somogyplusz.hu/files/zidota.pdf
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138d07a4f969---57571312324.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16130ea1cd0faa---napejo.pdf
- http://budaikepkeret.hu/uploads/file/61747215412.pdf
- http://vrakskodamnetice.cz/file/fipumoxurilurobasoz.pdf
- http://www.sictombbi.fr/ckfinder/userfiles/files/noredetofiw.pdf
- http://tantusmarina.com/UserFiles/file/67088625157.pdf
- https://radekslodkiewicz.pl/files/file/79163019407.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_off0000cf28.bin89cae6f4eb8fff964ef28b5829691ed4b45966c6b8b86015f68ebbc76ff907d7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF28 | 10812 bytes |
font_01_sfnt_off0000e7de.bin658142d6b0a3a5599a177716889b01d4d289fb510e4ff48ac1640697d76b30aa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7DE | 17388 bytes |
font_02_sfnt_off0001142e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1142E | 16792 bytes |
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