MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code. Several heuristics indicate the PDF is part of a link farm pointing to potentially compromised websites, suggesting a phishing or malware distribution scheme. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of the file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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://smidgel.ru/uplcv?utm_term=android+os+service
- http://homestayhoian.vn/uploads/image/files/fudolisemonej.pdf
- https://duvanco.be/docs/files/dukagokejeput.pdf
- https://pelicanfinancialnetwork.net/ckfinder/userfiles/files/75658032365.pdf
- https://mitrasuksesku.com/userfiles/file/xurodaxajesigodokavikus.pdf
- http://sun-marche.com/app/webroot/js/ckfinder/userfiles/files/wefigigudurikajeju.pdf
- http://zvaracskaskola.eu/editor_uploads/system/files/tosuwerivofumumosokez.pdf
- https://yuktogel.com/contents/files/81407931571.pdf
- https://pasifikendustriyel.com/userfiles/file/mibibak.pdf
- http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614456f4db645---13837267586.pdf
- https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/161367577a7199---9116532725.pdf
- http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/ackte64h37pd70pfqd7dl6dj9u/tuduximekinofen.pdf
- https://fsreloading.com/userfiles/files/66834191939.pdf
- https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/1597ae56a432e87a6b0e91befa4f9a38/lipinabum.pdf
- http://doktor-okonski.pl/uploadimg/file/revoxekaw.pdf
- https://2winit.com/Files/files/54957151405.pdf
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/161310dceb4b2b---54355032271.pdf
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614144c4ea99f---80406445871.pdf
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132af256ad26---31900009328.pdf
- https://dallaslandscapedesign.com/media/files/10612035759.pdf
- http://china-miyaco.com/img/file/20219685743.pdf
- http://chiaranannini.com/userfiles/files/ravufunexumonimedewoxurep.pdf
- https://loyd.rs/images/file/84746708791.pdf
- https://www.iieng.org/editor/ckfinder/userfiles/files/rumizifugujavexobarelazi.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_off000126c3.bin0f15c345d626b3a4cbd9f5eb2ea1da70b95abeeba2bfe3d61e0cdf8df54a6496 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126C3 | 10104 bytes |
font_01_sfnt_off00013d71.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13D71 | 16792 bytes |
font_02_sfnt_off00015583.bin77c6e9658840ffd99d62765ba520c0720b79cce95de6ddf53f312288773ae750 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15583 | 18700 bytes |
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