MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded JavaScript and a large number of external URIs, many of which point to compromised CMS upload directories or are part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution by redirecting users through these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://catamma.ru/uplcv?utm_term=vlsi+physical+design+books+pdf
- https://iiml-pgpsm.in/ckfinder/uploads/userfiles/files/dusixub.pdf
- https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b059dd82486---wopesozenumiwovot.pdf
- http://imhome-listings.com/userfiles/files/xubuvizuj.pdf
- http://emailreceptionist.net/userfiles/file/70700212520.pdf
- http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16120d95bb73d8---91244966128.pdf
- http://www.asslar.de/downloads/47290499838.pdf
- https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/sentf6qo71552c34ebjir612f3/14027271463.pdf
- http://ri-rm.ru/userfiles/file/jiximiri.pdf
- https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/d11a59b7facb74154e24bb2cdeec5636/tomadububativuvuvifesogub.pdf
- https://xn--80aanugxqi.xn--p1ai/admin/ckfinder/userfiles/files/xowiwemax.pdf
- http://fobas.cz/userfiles/file/12316313900.pdf
- https://schmitz.cz/res/file/5312483103.pdf
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612390a1914d3---kefujubopedowakazujapez.pdf
- https://greenvalleykerala.com/ckfinder/userfiles/files/bedufobami.pdf
- http://precedent.by/_newsite/images_from_html_editor/file/dubugewu.pdf
- http://highendschmiede.de/highendfiles/file/jupodijox.pdf
- http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7d8ce9055---rubemozomewo.pdf
- https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/ac070442bb7a488820cc6b2abe4a1bea/70354408215.pdf
- https://parklanehotel.asia/userfiles/file/12422423039.pdf
- http://www.pratikchoudhury.com/fckimages/file/riluweruwasug.pdf
- http://burningspearmarketplace.com/js/ckfinder/userfiles/files/28366066894.pdf
- http://ozdesignhouse.com/app/webroot/uploads/files/bugumukexu.pdf
- http://www.startservis.sk/novy/ckfinder/userfiles/files/dupusufazi.pdf
- http://homelife-superstars.com/image/files/97398221595.pdf
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609b6d776527c---paranotusexinisokuzegu.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_off0000dab0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAB0 | 16792 bytes |
font_01_sfnt_off0000f2c2.bin3e42b6be2a1e190c7e251c43ed80a204a8c04cc7f8f2194542f1a35d6e4f19a3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2C2 | 16828 bytes |
font_02_sfnt_off00011dda.bin6d72fc7ca28e44a114e22e6b0a74786ac6a234843ac948074f678ec96937c1b1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DDA | 11016 bytes |
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