MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites, likely serving as a distribution point for further malicious content. The document body is heavily obfuscated and contains no readable text, suggesting its primary purpose is to host these malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
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 http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/fpls8s2cffgdjrmu2oohlkbdd3/jexabifiku.pdf
- http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607793c438a20---badinowexasematunegen.pdf
- http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ade3606a4de---931301368.pdf
- http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e17b3b5c9c---gawupudetinixilumo.pdf
- http://mnogonomerov.ru/uploads/file/febagifeno.pdf
- http://mikailang.net/userfiles/file/20210607031301_1049148209.pdf
- https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/aaq3ppoa9kojkhl5dnvu99h131/tuborovofudiremanuf.pdf
- http://tz5168.com/uploadfile/image/2021/05/22/file/20210522_183222_181.pdf
- https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/ec6f7234aff6f160c4a83dd85a901ed5/madatub.pdf
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/398646f82308c872f553a2b36c6433ff/novivorozazodofusavivax.pdf
- http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca34858b62---37777597838.pdf
- http://bajcsidavidfoto.com/_user/file/98460014923.pdf
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/7a4db9d42e53197fd28ce96cf8136419/gotibozogumowamimaruwukex.pdf
- http://midel.me/userfiles/file/15898462441.pdf
- http://giaoducvietnamtv.com/images/ckeditor/files/48254610339.pdf
- https://speakingparrot.com/upload/ckfinder/files/tifusikesesawusikisagula.pdf
- https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/d6850868437227b34f6dd839a6ea4f53/jufavofepuxawoweb.pdf
- http://mmdplus.com/userfiles/files/20210605_115021.pdf
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/10hhcv8701i407ocpurk12phup/17739292541.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089169283dff---wofijosanegepoxageb.pdf
- https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a7c904574fb---zunezobawekosanalosonaju.pdf
- http://strandedtattoo.net/file/namabozikoxebafaf.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=free+karmic+astrology+report
- 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_off0000f981.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF981 | 16792 bytes |
font_01_sfnt_off00011198.binab016bdb2bbdf257c967dda1eb4702fe9d90d435680acbf4822afc18a241fe74 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11198 | 10796 bytes |
font_02_sfnt_off00012a8c.binc118d96333ec88b4cc5d3184598061158def6e49a8e5f0a39986300ad9ce75b1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A8C | 16880 bytes |
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