MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which are hosted on compromised WordPress sites or disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution through these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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://crysiq.ru/uplcv?utm_term=flash+firefox+android PDF link annotation
- http://beta-rc.com/upload/files/80138732863.pdfIn PDF document text
- http://personnelstrategies.net/userfiles/file/1628137559.pdfIn PDF document text
- http://wintec-samu.hu/uploads/files/50642498747.pdfIn PDF document text
- http://asckhn.com/acskhn/userfiles/file/13204693983.pdfIn PDF document text
- http://fratellilongoni.com/userfiles/files/72986283601.pdfIn PDF document text
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613aa642c3f7e---96147249454.pdfIn PDF document text
- https://luxesystem.site/js/ckfinder/userfiles/files/xawifasuv.pdfIn PDF document text
- https://firmabudowlanawalczak.pl/web/uploads/files/38651336435.pdfIn PDF document text
- http://climacom.eu/userfiles/files/suvizexowavemewipuf.pdfIn PDF document text
- http://radis-rrl.ru/userfiles/image/zokibejaxiki.pdfIn PDF document text
- http://ikuma-car.com/js/upload/files/romozevuzu.pdfIn PDF document text
- http://rancholasmonturaspremios.com/campannas/file/jaxupusezenozimujumuvo.pdfIn PDF document text
- http://mtegl.wsystem.sk/userfiles/files/jarotegapeb.pdfIn PDF document text
- http://elsped.hu/files/file/61680994795.pdfIn PDF document text
- https://autoteam.in/ckfinder/userfiles/files/25008229188.pdfIn PDF document text
- https://angkortaxiservice.com/userfiles/file/jalebitumexojomelabejeba.pdfIn PDF document text
- http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132b5b335ab1---40500120248.pdfIn PDF document text
- http://tsuiteru66.com/userfiles/file/dezina.pdfIn PDF document text
- http://namngonviet.vn/user-/files/56248463554.pdfIn PDF document text
- http://mirsistem.com/depo/sayfaresim/file/60827548543.pdfIn PDF document text
- http://scantech3d.com/files/60214227289.pdfIn PDF document text
- http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/e5e798ce353939e76310f3d9f9e09bac/8493346991.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cc9b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC9B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e4a8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4A8 | 1840 bytes |
SHA-256: e11639021ae82bc81d66597892112dbefd7f2cb67f426bbebb6fc3c29591e729 |
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font_02_sfnt_off0000ed4b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED4B | 19988 bytes |
SHA-256: 2d2449e91ce526447544175be1806cad10fddc9367d8ea4cb890d446d38050c2 |
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font_03_sfnt_off0001200c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1200C | 10432 bytes |
SHA-256: 047f3a09076dfb7620ecd9ccc52e012f5aae7c21c9edb3737b3f7ada5218a335 |
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