MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many pointing to compromised WordPress sites, and employs a social-engineering lure to trick users into installing browser extensions or updates. The document body is heavily obfuscated and unreadable, but the heuristics strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 7
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://huntic.ru/uplcv?utm_term=competency+based+interview+communication
- https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/9b87e64790d9448110a7527b70f3720f/latesepobekafe.pdf
- https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/3e70758c28284d342bb72422b4d7c9cb/bulimujegomaledaj.pdf
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/16080d5eaa40d9---54301824102.pdf
- http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/qnkji9fojme8mf9nmb8epjl7b4/salapasaf.pdf
- http://mai-colle.jp/userfiles/file/13472316354.pdf
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160c7999343dfd---bimepidibixofinuw.pdf
- http://urbanconstructions.org/images/uploadedimages/file/40070423982.pdf
- http://englishplanet.info/ckfinder/userfiles/files/7368673926.pdf
- http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd745054b9---tajanovifizaralikiritaf.pdf
- https://bleikss.com/userfiles/file/rolakusejonudameturupo.pdf
- https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/hj0ieqq0ha7jvcg6no40a2v7n7/solofubis.pdf
- http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1af20fc84---18096796091.pdf
- http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a18ed88e16e---2085187609.pdf
- https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/kdr4roklenhfcnnajco3pfru24/dekufugowalo.pdf
- http://blackivy.pl/userfiles/file/91050201526.pdf
- https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/5a15b97c908d675b119afc3345f88ac8/98764298376.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_off0000f3d5.binc3a72b5fcd1097ce442d26971bea524c21eceb41de31544218c01732c1abedae |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3D5 | 16792 bytes |
font_01_sfnt_off00011efa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EFA | 16792 bytes |
font_02_sfnt_off00013711.bin36e71d36c2b07507881196a877c59457acfa07532b7c4dd3133de7a7a25a665c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13711 | 11168 bytes |
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