MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, a common technique for delivering malicious content or redirecting users to malicious websites. Several heuristics indicate the presence of external URIs and link farms, some pointing to compromised CMS uploads, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://nomylo.ru/uplcv?utm_term=hide+app+privacy+hider PDF link annotation
- https://iqrainternationalschool.org/_assets/files/46716565164.pdfIn PDF document text
- http://daming-school.com/userfiles/file/ferulilezulukab.pdfIn PDF document text
- http://petra-dario.info/upload/datoteke/76054325689.pdfIn PDF document text
- https://giverny-bkk.com/upload/files/bofalinajubusovu.pdfIn PDF document text
- http://www.ernakulamarchdiocese.org/www/js/ckfinder/userfiles/files/23036028070.pdfIn PDF document text
- http://sallytour.com/FileData/ckfinder/files/20210917_956FB12A47E623B6.pdfIn PDF document text
- https://telenovella-bg.com/files/goxepajisez.pdfIn PDF document text
- https://ozora.schaffsen.com/contents/file/dipezilizupesujolesinaj.pdfIn PDF document text
- http://xn--80aikni6a0b.xn--p1ai/images/file/79178251332.pdfIn PDF document text
- https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/r68npc6bmgppa26cipe20pv632/bebubamazabopuv.pdfIn PDF document text
- http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613169cb65b80---wazetereboxesagegulime.pdfIn PDF document text
- http://traiteurluc.com/userfiles/file/40748275889.pdfIn PDF document text
- http://enslev-anlaegsservice.dk/userfiles/file/47624493855.pdfIn PDF document text
- http://uchid.com/uploads/file/83020545897.pdfIn PDF document text
- http://ingmarcofaedi.com/userfiles/files/32398598250.pdfIn PDF document text
- http://ipceurope.com/assets/file/disili.pdfIn PDF document text
- http://usatovl.ru/upload/fckeditorfile/29958947477.pdfIn PDF document text
- https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/glca8e32vmfaqcs0b6u29qn38k/76287506758.pdfIn PDF document text
- http://chipgene.com/image/files/20210902_172715.pdfIn PDF document text
- https://wineuniverse.us/userfiles/file/niribodorijexike.pdfIn PDF document text
- http://olgapolyakova.com/files/files/zegeboxu.pdfIn PDF document text
- http://www.agot.pl/upload/file/82704410071.pdfIn PDF document text
- http://www.oteliapelsin.ru/ckfinder/userfiles/files/kidotexotuboposawavolum.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ec03.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC03 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0001041a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1041A | 10244 bytes |
SHA-256: 7190c66a1c7a58f4e488a24b07d5ccd5e07164e9a8af9bfd1ac73f99478e37bd |
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font_02_sfnt_off00011b31.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B31 | 19032 bytes |
SHA-256: aff095329a03496852a507197e6682b3c2af1b74e7eccb7bfe58bbefce5d9eb1 |
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