MALICIOUS
212
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and presents a lure to copy and paste content into a shell, indicating an attempt to trick the user into executing commands. This behavior suggests the document is designed to download and execute a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9800
Heuristics 9
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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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Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LUREDocument tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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 http://dabaizhongxue.com/upload_fck/file/2021-5-22/20210522001346337519.pdf
- https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/160905eebdd615---xebixumapudimego.pdf
- https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/f1a001963dae031b2e93088e077de8ba/40156332261.pdf
- http://zkojicin.cz/userfiles/file/revutuwu.pdf
- https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/f3b575448b6fbdcbe0ca7b760f6d6942/lunuboguz.pdf
- http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/nizolikuwabow.pdf
- https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/88238e7662db146cb288965c2225c0a6/32168463353.pdf
- http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/51dee16cfa36dff9b6c433c94fef6423/99636539487.pdf
- http://robalton.es/Albums/images/file///wuduvanaresisa.pdf
- https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/129100cd990c7956fd71704c5ca76b0c/5034036901.pdf
- http://vijyaiprismcrm.com/userfiles/files/36202208884.pdf
- http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cc0c819dfa---48235942459.pdf
- https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/3ae760f51b693fe0808f78c3097831f0/lexodokujakup.pdf
- https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/b21t3onesvp9ovi82n144897gv/mewarewebejusifojeganumo.pdf
- https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/8b21f6cdfa6eae62e9ffe407f52635fd/64863853862.pdf
- https://aquafilling.com/userfiles/file/gositakot.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b2efac279f3---57940806973.pdf
- http://videofilm-tv.ru/content/File/gafutitozafixuj.pdf
- https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/431710cdd88e0a2f4f28e9f9d44c5ebf/zikolenugasa.pdf
- https://meganimal.pt/site/upload/file/97287810150.pdf
- http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073f2966738c---99669789646.pdf
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eee2d4aab4---93070194159.pdf
- http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef7bbbbdbc---87344132873.pdf
- https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/cee50e460fccd820e9490dd015686edd/wuwofositusun.pdf
- https://denimder.org/resimler/files/96762966638.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=macbook+pro+slow+to+wake+up
- http://pro.ovh.net/~tribuene/images/banque/file/zavovukizadifimojugawower.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_off0001202b.bin6467a56cdefdef76e9e8c07bcba950e87960e171c3ab864c8648e3325708182e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1202B | 10584 bytes |
font_01_sfnt_off00013870.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13870 | 16792 bytes |
font_02_sfnt_off00015082.binf65e42ff24cb586ca4cf2fd49517c3c7c070d54b238b9436c3269f18b8de6a8e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15082 | 18300 bytes |
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