MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Numerous external URIs were extracted, many pointing to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of these links and the overall detection profile indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://philabc.ru/uplcv?utm_term=project+acceptance+letter PDF link annotation
- https://www.winsum.frl/ckfinder/userfiles/files/gabelilomave.pdfIn PDF document text
- http://pharmabiosolutions.com/filespath/files/20210915192534.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161317e0c0212b---devisekikakijemaxajutog.pdfIn PDF document text
- http://kingtonkatsu.com/uploads/files/kirifubu.pdfIn PDF document text
- http://proxkimya.com/resimler/files/nogugodezumozir.pdfIn PDF document text
- http://studioagm.it/userfiles/files/28677180853.pdfIn PDF document text
- http://sharon-barron.com/userfiles/files/wekuvawikivusivipowoko.pdfIn PDF document text
- https://iamtimeshare.com/userfiles/file/mubim.pdfIn PDF document text
- https://sieuthimaytinhcu.vn/upload/files/wubowuwujeponevagejiji.pdfIn PDF document text
- http://lixupeng.com/uploads/files/60607737092.pdfIn PDF document text
- http://kirakuramenandsushi.com/uploads/files/zapevoniwesege.pdfIn PDF document text
- http://xn--80aafbjcazdrhzgiddbbcsg4l.xn--p1ai/pict/file/32695613126.pdfIn PDF document text
- http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/161442c316d9a2---4762145663.pdfIn PDF document text
- https://protum.se/file/35914367657.pdfIn PDF document text
- http://ultraljud.nu/bild/files/wusezepezaled.pdfIn PDF document text
- http://equipociclistaugeraga.com/ciclistas/userfiles/file/62228673329.pdfIn PDF document text
- http://johnmichaelharrisonlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/78865359527.pdfIn PDF document text
- http://lctrading-gmbh.com/ckfinder/userfiles/files/wagipowepapaxeluduvupo.pdfIn PDF document text
- http://elencostruzioni.it/userfiles/files/25595936592.pdfIn PDF document text
- http://jumpinfit.it/userfiles/files/rinazafasakipikit.pdfIn PDF document text
- http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138f9a3948bd---fuxofijinatovirexenel.pdfIn PDF document text
- http://vitanova-cattery.com/upload/file/12870442063.pdfIn PDF document text
- http://haiphongcontest.com/images/files/sazovupiduwaloribep.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e33b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE33B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fb4d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB4D | 17236 bytes |
SHA-256: e3cadd94ae1248ca156b2f3ad0cd93904bf68e40d2311402a9c0c1a47bd661bb |
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font_02_sfnt_off00012833.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12833 | 10236 bytes |
SHA-256: cadf10c981ec0d0ce927f6ff0321dd941b3fb1d9adab9c1e25c62a47d90396ef |
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