MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links, many pointing to compromised or disposable hosting, indicative of a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The presence of external URIs and a link farm structure points towards an attempt to lure users to external sites, potentially for credential harvesting or further payload delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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://dochoiotovn.com/uploads/userfiles/file/91606908439.pdf
- https://vcubusinesssolutions.com/userfiles/file/44718657044.pdf
- https://karlschool.org/uploads/files/202108312258433850.pdf
- http://www.vinoplaza.nl/img/upload/files/jolewekudaburinunaloxalo.pdf
- https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/0038d830ba52948fc2d81a5e81b57fc9/20998679888.pdf
- http://chamdure.com/DATA/files/wixitukuzo.pdf
- http://telekommarketing.com/firme_data/files/17710032713.pdf
- https://alternativecarrepair.nl/userfiles/file/3384099212.pdf
- https://chennothinterios.com/uploads/file/96550885242.pdf
- http://gesundimjob.at/images/content/files/bubazabaz.pdf
- https://szabobuszrendeles.hu/files/files/29104165866.pdf
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d1701476fd---jasawi.pdf
- https://10s317.com/uploads/files/202109180023266579.pdf
- https://amzentransportationindustries.com/admin/imagetemp1/file/dazezokujobefun.pdf
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/15489d2b1d2e5622cb444944c8e8d0e3/xesonisapeg.pdf
- https://rowanmkt.com/Uploads/ckfinder/userfiles/files/77177776998.pdf
- https://agencement-menuiserie-var.fr/stockages/files/43689830850.pdf
- http://bogaarchitetti.it/userfiles/files/53130185680.pdf
- https://ccs-corporation.com/ckfinder/userfiles/files/85777266255.pdf
- http://olivetheater.com/userData/board/file/negakevajekeropefebe.pdf
- https://wolfgang-photography.com/userfiles/files/dutow.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=graham+coxon+walking+all+day+chords
- 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_off0000c21a.bin96d3bfede556210aa9e28e4591eccc0fb9ceab62edb19bf336deda03573359bb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC21A | 18344 bytes |
font_01_sfnt_off0000f123.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF123 | 16792 bytes |
font_02_sfnt_off0001093a.binbc456f773fc57adf1ab6fd1736b52e570c37f0ffbe266ca29c7beb8fab241beb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1093A | 11020 bytes |
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