MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of external links, many pointing to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. No scripts were extracted, but the presence of numerous URLs indicates a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://crysiq.ru/uplcv?utm_term=upcasting+and+downcasting+in+java+interview+questions
- https://towa-aaa.jp/userfiles/file/lijudewup.pdf
- http://bakineshr.az/ckfinder/userfiles/files/42685613285.pdf
- https://manorhair.com/uploads/files/202109202129381859.pdf
- http://klhl.com/userfiles/file/42323618901.pdf
- http://appextskihjthj.handylover.com/upload/files/wovogoxutafepezutuxujivi.pdf
- https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/44udhk6ofgmlml1lq920osr7q1/34442337497.pdf
- https://aakritidigitals.com/userfiles/files/loranidazovojelege.pdf
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/ud4uqbpmvbgr3vnflb3vjnpii5/41839684724.pdf
- https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614006a84d9a6---88831387477.pdf
- http://exoticland.bg/upload/files/files/22167450407.pdf
- http://kultura-vyazniki.ru/sites/default/files/file/32850729607.pdf
- http://nirmalapublicschoolerumely.com/userfiles/file/16306730049.pdf
- https://falconshipping-uae.com/userfiles/files/68525389354.pdf
- https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615ba93d188fe---lukoxuvosovu.pdf
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d480427615---75932022993.pdf
- https://rafaellopezehijo.com/upload/files/83735005892.pdf
- http://naszemotyle.natura2000.pl/imgturysta/files/46178642821.pdf
- https://htijsr.com/userfiles/file/kuseberabexigitinile.pdf
- https://bakotech.at/uploads/ckeditor/files/51575565185.pdf
- https://pomacanthe-art.fr/imagebeforeafter/files/sepepuwimidarupidekoximi.pdf
- http://w-f-l.de/user_img/file/jelejeg.pdf
- https://dallaslandscapedesign.com/media/files/rixuseputosefedevigigunas.pdf
- https://www.vasutaszeneiskola.hu/ckfinder/userfiles/files/boribivibu.pdf
- http://tunesistudio.eu/userfiles/files/zixewagulox.pdf
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161350ca5c5080---30640434214.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_off0000dfa7.binb2dec060c040dd1475f535db39f20e8a283a5fb01f9fa9965207bc7603472a2c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFA7 | 20032 bytes |
font_01_sfnt_off0001138e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1138E | 16792 bytes |
font_02_sfnt_off00012ba5.binbd24c6d1ec81a1c51e67970796c70c022e07bdf0de1de90566f80d95cc4be754 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BA5 | 11180 bytes |
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