MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised websites or disposable hosting, indicating a link farm for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or trojan delivery via these external links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://smidgel.ru/uplcv?utm_term=example+of+educational+research+proposal+pdf
- http://hyosangjo.com/userfiles/file/20210717221144.pdf
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8432f7c274---pukejalepi.pdf
- https://nepalonetours.com/userfiles/files/48195158890.pdf
- http://asja-doll.ru/userfiles/file/xukeganuwarukatukat.pdf
- https://prosperitas.be/data/assets/file/31961010878.pdf
- https://linlinline.biz/js/ckfinder/userfiles/files/rafaxiwawapuliretevi.pdf
- https://profitaler.com/UserFiles/file/dafajizebuzoturofuzopet.pdf
- http://toonesk.com/upload/32042314659.pdf
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/19494657876eb188cb6222d7a70e57aa/bewelenekatoma.pdf
- http://yearbookplus.com/uploads/ckfinder/files/zuwumabuxurazabez.pdf
- http://gilendor.cz/userfiles/file/xapis.pdf
- http://sgpeo.pl/users//file/risifodunerebemutozu.pdf
- http://mai-colle.jp/userfiles/file/gexurozojudikixenitok.pdf
- https://corpeverest.com/ckfinder/userfiles/files/83942845046.pdf
- https://agermag.ro/mm/file/wovirepibo.pdf
- http://bassbasement.org/userfiles/file/22718537128.pdf
- http://drive4smilesontario.ca/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/45905052967.pdf
- https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/dcceam00rekkggd6pqsnp8ttmt/gamajilexoku.pdf
- http://aytekinpolatel.com/image/files/80596119978.pdf
- http://albertopizzetti.it/userfiles/files/80656372337.pdf
- http://hoangminhceramics.com/app/webroot/uploads/files/tafajovoxusop.pdf
- https://koetec.com/home/~ptow/public_html/ckfinder/userfiles/files/74112690328.pdf
- https://alexandrapanayotou.com/web/images/static/file/73204031366.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_off0000d90a.bin9bb140178ed6b008b32e5d5381bcbe0990973e8afdc7bb8a46f6092055f7f005 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD90A | 17356 bytes |
font_01_sfnt_off0001063e.bin2eada4cfab99f68ed8978441ccbd07b7bca5b1a1e9b7f38087822671b58b2ef5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1063E | 11072 bytes |
font_02_sfnt_off00011fcc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FCC | 16792 bytes |
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