MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external sites, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to distribute malicious content. The presence of a 'download button' heuristic further supports a phishing or malware distribution lure. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=the+art+and+science+of+analog+circuit+design+pdf
- https://mobiligennari.com/userfiles/file/45765730360.pdf
- https://olivier-daulte.com/ckfinder/userfiles/files/nugosonojimebivaxek.pdf
- http://cosmik-kino.ru/sadm_files/85101891624.pdf
- http://hainfelderteich.at/18938737005.pdf
- http://playeasypiano.com/resources/fck_images/23700216503.pdf
- https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/aafcb0e12a290ee77c81a1f4962c2084/24806019827.pdf
- http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b574ec14744---gozarigipobovute.pdf
- http://pivotal-technologies.com/userfiles/file/74621150045.pdf
- https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/3b475614dd88d71cfc19001d5e9d80c1/maminodiwowiwerekefiviso.pdf
- http://manpukuorder.com/uploads/files/65431224907.pdf
- http://thestarbusan.net/FileData/ckfinder/files/20210613_FB478ED80E511DB8.pdf
- http://safarang.com/basefile/files/95881317884.pdf
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160776382a03d5---9253893671.pdf
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/18ur2fa5lucln7cbedu1cb0riu/85055373615.pdf
- https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/oa51v69p0i7hcj7ai2ng4u20pc/76724688196.pdf
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/2pfo923h3a8vf587ogl83gpelj/30747037251.pdf
- http://orderbestwings.com/uploads/files/sabizazoratoreru.pdf
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/53cc8d28a9fc576281b9d2afcd3311bf/91546114612.pdf
- http://kapelski.pl/userfiles/file/joxesapob.pdf
- http://highdeal.linkeo.net/ckfinder/userfiles/files/titawizegavalikatavarom.pdf
- http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d239839b18---27630326444.pdf
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/4jhvmueta0qfkejrvhmtou0r60/tezag.pdf
- https://destockbaby.com/ckfinder/userfiles/files/62956101213.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_off0000e2a4.bin8acd7f0ac45a4f54f7e40aac52d5b3644bdbb638384105785f7239d30cd377bb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2A4 | 16444 bytes |
font_01_sfnt_off00010d3e.bin3d373dd470eaffb4d00432a803d19fbf92401ec783afadfffcce8496a154bf3e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D3E | 10960 bytes |
font_02_sfnt_off00012669.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12669 | 16792 bytes |
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