MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous external URIs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The presence of embedded JavaScript and a high ML classifier score further support its malicious nature. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
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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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://krisoc.ru/uplcv?utm_term=gta+vc+cheater+apk+free+download PDF link annotation
- http://residencecarlofelice.com/userfiles/files/boxovonaworaze.pdfIn PDF document text
- http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132e320bc084---48420662818.pdfIn PDF document text
- https://chambredhotes-savoie.com/ckfinder/userfiles/files/sepozudutofafijiviz.pdfIn PDF document text
- https://icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/70567574800.pdfIn PDF document text
- http://cuacuonnhaxuongbinhduong.com/upload/files/nomigako.pdfIn PDF document text
- https://cqc-material.com/app/webroot/userfiles/files/rawexaxubid.pdfIn PDF document text
- http://aurora-c.jp/files/files/dogemezijamineno.pdfIn PDF document text
- https://svenjakretschmer.com/ckfinder/userfiles/files/widixerilalobojaxizusimek.pdfIn PDF document text
- http://ccadl.com/files/20210926165253.pdfIn PDF document text
- http://jjw-led.com/userfiles/file/datodupuxaguta.pdfIn PDF document text
- https://unosms.us/userfiles/file/panasa.pdfIn PDF document text
- https://pointwebhost.com/calisma2/files/uploads/68387700943.pdfIn PDF document text
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1614f55a9434ed---74937947316.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/14240948115.pdfIn PDF document text
- http://myredm.ru/uploads/file/4939326551.pdfIn PDF document text
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161326a55824dd---48658620266.pdfIn PDF document text
- http://docando.es/js/ckfinder/userfiles/files/1788514101.pdfIn PDF document text
- https://stradatextiles.com/upload/ckfinder/files/mabibe.pdfIn PDF document text
- https://southernwashpros.com/nbloom/fckuploads/file/gobugajuzivapomuvegiz.pdfIn PDF document text
- https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/964c6caea47f50fa3ed995217d461a0d/misonuxofujidobekoru.pdfIn PDF document text
- http://cluster006.ovh.net/~greeters/namur/ckfinder/userfiles/files/wedujelijofova.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_off0000b06d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB06D | 15488 bytes |
SHA-256: a76f10cbec948ae05eba8ce674c99105b422ca89b11fbeacc1d2f6b62bb7973e |
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font_01_sfnt_off0000d7ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7ED | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f004.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF004 | 10740 bytes |
SHA-256: 07b7fe8bf7fac308198c505a13d654db253f906dc16f7437cf9b9a789e60698c |
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