MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs that point to various domains, many of which appear to be compromised or disposable hosting. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics indicate a pattern of using these links for malicious purposes, likely to distribute malware or conduct phishing. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 6
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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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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://crewmak.ru/uplcv?utm_term=phone+case+diy+mod+apk
- http://studioriboldi.eu/userfiles/files/34380274734.pdf
- https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/33304d91d52df5af5d13f3965cbdf097/miwokazopijasijonowo.pdf
- https://anaksemut.com/contents/files/surotowusisofex.pdf
- http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/a24fe0311237906ffab8ca4b0ce8484e/lalumimogu.pdf
- http://premiumcsp.com/uploads/files/badofawadativa.pdf
- https://transilvaniafishing.ro/app/webroot/files/userfiles/files/20946986242.pdf
- https://alpinebadmintonacademy.com/ckfinder/userfiles/files/lamudejigumavodaxepevaf.pdf
- http://gesundezellen.de/neu/userfiles/file/lobebufevilubuvopo.pdf
- http://portalpr-b2b.es/img/user//file/_0139053001631879103.pdf
- http://kanomax-nsk.ru/images/gukag.pdf
- http://kxxbs.com/uploadfiles/file/a/5715270733.pdf
- http://dooroc.com/tk/upload/file/54828006532.pdf
- https://pmsp-me.com/userfiles/files/rekemutamamuwarikebot.pdf
- http://fohow77.ru/upload/file/7980096325.pdf
- http://plantessentialoil.com/upload/files/79046120871.pdf
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/0913d0d5c77a0984736bc5ba58f7e1b7/sazovoruwirimewiduki.pdf
- http://shouce-image.kuchuancdn.com/Public/resource/files/38411430280.pdf
- http://africalegal.nl/userfiles/file/jejubis.pdf
- https://mimzyonline.com/userfiles/file/zevosixuv.pdf
- https://sanidom.pl/img/file/nurevowedinijadotaf.pdf
- http://slenderclub.cz/ckfinder/userfiles/files/31385011833.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614719946f750.pdf
- http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16140bab5c2d12---bojagokupomebuzerikusako.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_off0000b109.bin3dbeb8e4d201fb2d346acd8c0c0387cb0336d26806998ef5e17f0ff9b9084dbf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB109 | 10744 bytes |
font_01_sfnt_off0000c98e.bin72453678217f9c0b5aa2701e26645c97c8639932a4070711dcb087c4d6961231 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC98E | 14728 bytes |
font_02_sfnt_off0000edfa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDFA | 16792 bytes |
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