MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and links to compromised CMS uploads, suggesting it functions as a link farm or phishing lure. The primary attack pattern involves directing users to external sites, likely for further exploitation or credential harvesting.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://infrive.ru/uplcv?utm_term=sentence+rearrangement+questions+pdf+download
- http://murielbellhomes.com/userfiles/files/32950674094.pdf
- https://sbsoftware.ro/admin/userfiles/file/77302565750.pdf
- https://pecsikult.hu/files/file/bijefegusavodigotutif.pdf
- http://chalappuram.com/userfiles/file/novusapefedife.pdf
- https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075ce98f3841---beboromedum.pdf
- https://alshamiltrading.com/alshamilfiles/file/12317546488.pdf
- https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/8a0b0ea0696fe2da85ed495d7abfe27c/45612246756.pdf
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/161003590b9dde---difokiresadanopepezaja.pdf
- https://argumentua.com/i/file/tapifitofalofazeker.pdf
- http://kondicionery-vidnoe.ru/upload_picture/file/pedupoxekisisedogasab.pdf
- http://vidol.nl/userfiles/file/jaxemamapajilojabini.pdf
- http://magicdiscoradio.hu/userfiles/file/19371496665.pdf
- http://impressivetravelvietnam.com/upload/files/16472332663.pdf
- http://tmtechvn.com/webroot/img/files/pawifexibadupujefupiru.pdf
- https://stayinbranson.com/ckfinder/triplebuserfiles/file/mufitomi.pdf
- https://tourgardan.com/basefile/tourgardancom/files/32549880502.pdf
- http://vervesimuhub.com/userfiles/file/pipujuregalisejetexepan.pdf
- http://princeworldwide.com/multimedia/userfiles/file/77545023904.pdf
- https://desense.eu/uploads/wysiwyg/files/60254050149.pdf
- http://lutechmed.com/Images_upload/files/kugotilanebigoxenomezi.pdf
- http://01host.ru/userfiles/files/biwifon.pdf
- https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/b9bd7ad706b7dbf439148bf970be90d5/minisojix.pdf
- http://gz-theoutfit.com/UploadFiles/FCKeditor/20210619190738.pdf
- http://prestizhstroycompany.ru/SITE/files/editor/file/18268180976.pdf
- https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/817d74a73af0ba0ea41ad5a87f2fd920/28996364542.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_off0000cf10.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF10 | 16792 bytes |
font_01_sfnt_off0000e722.bin7499b3d5204a040652c7e6a8c2661ec5cc50974968f6007d4af6f56222d019c0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE722 | 17640 bytes |
font_02_sfnt_off000114cb.bin94b624cd9d012eef476f76e364be3758779effeccd6f4062a5fa3348315e8dfa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x114CB | 11368 bytes |
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