MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to various external URLs, one of which is `https://inwebjor.ru/uplcv?utm_term=lulubox+carrom+pool+hack+download`. The document body is heavily obfuscated and unreadable, but the presence of numerous external links and the heuristic `PDF_SEO_DISPOSABLE_LINK_FARM` suggest the primary purpose is to redirect users to potentially malicious content or phishing sites. No scripts were extracted from this sample.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://inwebjor.ru/uplcv?utm_term=lulubox+carrom+pool+hack+download
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136cda030fee---68284900135.pdf
- http://xn--djr00fsyfv0o5qgy9u.net/filespath/files/20210902091246.pdf
- http://flapboxes.custompackageboxes.com/userfiles/files/govax.pdf
- http://playeasypiano.com/resources/fck_images/58732392280.pdf
- https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614427177f79e---situtojon.pdf
- https://qkon.ca/images/file/50469621578.pdf
- https://malashealthcare.com/userfiles/files/48426559862.pdf
- http://epicridesnepal.com/files/kosugipumutefuveni.pdf
- http://speaklifeiamgreatness.com/files/files/sikusesorabuxigefowodapo.pdf
- https://duragloss.pl/userfiles/file/nojuxez.pdf
- https://comptables-publics.fr/userfiles/file/35224150205.pdf
- http://sensi-leszno.pl/userfiles/file/memixexepaweravok.pdf
- https://cafemocion.com/userfiles/file/41908712952.pdf
- https://www.larche-de-jules.fr/ckfinder/userfiles/files/fekopowitebetogosivozim.pdf
- http://domesticsolutionsagency.com/userfiles/file/29726385805.pdf
- http://marleenjansen.nl/images/uploadfiles/fomumuzogeneletakidosez.pdf
- http://elosc.com/upFile/file///ITX202109170454139020.pdf
- http://yomamasushitogo.com/uploads/files/7935825052.pdf
- http://phukientubepxinh.info/gomsu/sanpham/anh/files/pipuderifemujekabadimoj.pdf
- https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/161379f473e7d4---1335614038.pdf
- http://zhuxintrading.com/uploads/ckfinder/files/20210911/16313685415574.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_off0000d691.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD691 | 16792 bytes |
font_01_sfnt_off0000eea3.bin9cb77da774156f11458e77faec79d699d1db3bf00bd0a331b31a45d5a867b8da |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEA3 | 17568 bytes |
font_02_sfnt_off00011c49.binb3a12710a7beac48ca437bd99ac6ed942a46a751aaeade1da0a81bde50bb5319 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C49 | 10768 bytes |
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