MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as a malicious PDF by ML classifiers and ClamAV. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The presence of 'utm_term' in one URL indicates a phishing or tracking attempt. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing lures and potential malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://krisoc.ru/uplcv?utm_term=windows+7+professional+oem+iso PDF link annotation
- http://eternaseguros.net/files/files/gizijobeku.pdfIn PDF document text
- https://cosmopolitanhotel.lastrada.bg/uploads/wysiwyg/files/govudurad.pdfIn PDF document text
- https://perfecthospital.org/ckfinder/userfiles/files/500891422.pdfIn PDF document text
- http://kazuma.ru/ckfinder/userfiles/files/tuwagivinulikopifotageni.pdfIn PDF document text
- https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f8ee094bbe9cf5067544bfd74ed5a7f1/beziloxokiwofururuzisu.pdfIn PDF document text
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/d0a387b585f3a7e400adb8101e3257b4/jijaxot.pdfIn PDF document text
- http://archbot.pl/files/file/65692011127.pdfIn PDF document text
- http://www.mbk-montage.nl/ckfinder/userfiles/files/monotovozezigekirikif.pdfIn PDF document text
- http://kamnitikamini.si/upload/files/67793181037.pdfIn PDF document text
- http://atsolution.org/userfiles/file/20210915225427690954590.pdfIn PDF document text
- http://acm-medicali.it/userfiles/files/6114542810.pdfIn PDF document text
- http://globalnetworks.de/www.galabau-poscher.de/main/preview/ckfinder/userfiles/files/texoditeg.pdfIn PDF document text
- https://o-dance.com/upload/files/68092724785.pdfIn PDF document text
- https://thaibamboorestaurant.ca/phpsites/bard_ford/uploads/file/4523904023.pdfIn PDF document text
- http://angelescare.com/userfiles/file/soresovejimudebuse.pdfIn PDF document text
- https://futurefacesnyc.com/uploads/file/42519705691.pdfIn PDF document text
- https://decisionstogo.com/fck_image/file/95185628428.pdfIn PDF document text
- http://merwepizza.com/upload/file/potawuvesepuziwelu.pdfIn PDF document text
- http://appartementslisa.it/an3_Uploads/file/26569591381.pdfIn PDF document text
- http://hakanhurdacilik.com/userfiles/file/21368225395.pdfIn PDF document text
- http://imbirimbir.ru/files/xanevewoposazulumadotow.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/80585705577.pdfIn PDF document text
- https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161304169bbaf4---zefon.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_off0000f7e1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7E1 | 18072 bytes |
SHA-256: 5a3e481dc4671558c929d5c20a06ecf4275d52064ec93eea05c23d31789f3d67 |
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font_01_sfnt_off00012663.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12663 | 10688 bytes |
SHA-256: fd3ff0aa63e37bd31b60516b970c2d068aa31cf1e6a762a7e4c0baf3caf5303c |
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font_02_sfnt_off00013ef1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13EF1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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