MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document functions as a link farm, directing users to numerous external URLs, many of which are hosted on disposable or compromised domains. The presence of 'utm_term' parameters in some URLs suggests an attempt to track user engagement with phishing lures.
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://krisoc.ru/uplcv?utm_term=introduction+myself+for+college+students PDF link annotation
- http://home-plast.ru/foto/files/xiwukapikubir.pdfIn PDF document text
- http://guides2alpes.fr/uploads/file/bexowapujej.pdfIn PDF document text
- https://juraganmonyet.com/contents/files/xenimixav.pdfIn PDF document text
- http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/161407f18a2561---gumaxilebuti.pdfIn PDF document text
- http://teamtrinity.net/trinitya/file/suxepusakujukukixegu.pdfIn PDF document text
- https://faresaldabbous.com/uploads/files/13575865277.pdfIn PDF document text
- http://chi-kara.net/Upload/files/61074695713.pdfIn PDF document text
- https://optimumquestsolutions.com/ckfinder/userfiles/files/juragiwodegalimu.pdfIn PDF document text
- http://bursaceyizgelinlik.com/images_upload/files/puxolisapilixo.pdfIn PDF document text
- http://manegedebuitenwijck.nl/uploads/file/zexozilo.pdfIn PDF document text
- https://avukatwebsitesi.cicasoft.com/upload/files/sivorebinenomijuruf.pdfIn PDF document text
- https://www.sterlingsez.com/ckfinder/userfiles/files/batorov.pdfIn PDF document text
- http://xtra360.net/campannas/file/sewopafefa.pdfIn PDF document text
- http://dvif.fr/userfiles/file/75960592168.pdfIn PDF document text
- http://ecofincas.net/ckfinder/userfiles/files/birowode.pdfIn PDF document text
- https://akilanews.com/ckfinder/userfiles/files/37964268688.pdfIn PDF document text
- http://vtdsbinhthuan.vn/public/uploads/userfiles/file/julajejinusawavu.pdfIn PDF document text
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16150bdf27047b---15094262372.pdfIn PDF document text
- http://artetendasud.it/userfiles/files/62629460480.pdfIn PDF document text
- https://5ky13lu3-1251.com/contents/files/82312266459.pdfIn PDF document text
- https://www.almuhja.com/ckfinder/userfiles/files/61331681838.pdfIn PDF document text
- https://onecre.com/images/content/files/54438440588.pdfIn PDF document text
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614cb11802088---fegazikiluwipu.pdfIn PDF document text
- http://rejs2013.cycling-recycling.eu/imgturysta/files/robawezagixizelir.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_off00015221.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15221 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00016a33.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16A33 | 21428 bytes |
SHA-256: cd950459190525eeef664bee5dfba715f1930cf20bb34b12571e2b0fa3dd2218 |
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font_02_sfnt_off0001a1ff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1A1FF | 10824 bytes |
SHA-256: 4c3a3ecbcb342fe1d0a6d6b54bd39c6e321d392c97f256356cebf1b3a5ab050f |
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