MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Numerous embedded URLs point to compromised CMS upload storage and disposable hosting, indicating a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated, but the presence of external URIs and compromised CMS links strongly suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
Heuristics 6
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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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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://medvor.ru/uplcv?utm_term=sir+philip+sidney+as+critic PDF link annotation
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1614e01da86aa3---47837808846.pdfIn PDF document text
- http://ngnjl.com/userfiles/files/wegudotevakazijexol.pdfIn PDF document text
- https://xtremefitksa.com/ckfinder/userfiles/files/gipegodizesenoguwufuri.pdfIn PDF document text
- http://www.corazondelsol.es/ckfinder/userfiles/files/45193079874.pdfIn PDF document text
- https://z87992961.com/upload/files/20210906165228.pdfIn PDF document text
- https://trsoftyazilim.com/genelresimler/file/89120529531.pdfIn PDF document text
- http://www.hausman.eu/images/wyswig_images/file/63072458257.pdfIn PDF document text
- https://dampinggame.com/calisma2/files/uploads/zobasakaxisufid.pdfIn PDF document text
- http://fotografieindex.nl/images/uploads/24674397402.pdfIn PDF document text
- https://officialbacknumber.org/editor_up/bolikefep.pdfIn PDF document text
- http://xy-interior.com/uploads/files/202109200949428687.pdfIn PDF document text
- https://pikhospital.com/ck_uploads/uploads/files/kedukexu.pdfIn PDF document text
- http://plncse.hu/php_data/file/95641078762.pdfIn PDF document text
- https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/kigl0anbrks7jk9682m9bm1aro/lovod.pdfIn PDF document text
- https://websbag.com/uploads/files/joxukenadejufigitoka.pdfIn PDF document text
- http://www.zywawiara.pl/pliki/55074865516.pdfIn PDF document text
- http://kjphotocon.org/data/userfiles/files/rutedagefawotuvifarav.pdfIn PDF document text
- https://kawanmto.net/contents/files/miguj.pdfIn PDF document text
- http://imdad-egypt.com/userfiles/file/gogiwojuxe.pdfIn PDF document text
- http://hengtaixin.com/HangShun/ckfinder/userfiles/files/33228243422.pdfIn PDF document text
- http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615400e618420---33363298744.pdfIn PDF document text
- http://avandcie-automation.fr/ckfinder/userfiles/files/24461657827.pdfIn PDF document text
- http://xn--80aer5aza.xn----htbdepbihnfb8cyg.xn--p1ai/ckfinder/userfiles/files/napesufirek.pdfIn PDF document text
- http://haenuri.net/ckupload/files/viwawuxefokul.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_off0000b8af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB8AF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d0c1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0C1 | 21036 bytes |
SHA-256: 46c891beec1f5ace46be557c55ecbc814ac6d24460792f78fb99c0e7f7f09493 |
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font_02_sfnt_off000107ac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107AC | 10680 bytes |
SHA-256: 2b6731906a44127fdc1170c20ccf7077e6e6d05f83f80bc385d2a398476f0e01 |
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