MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, with numerous embedded URLs pointing to various domains, including those hosted on compromised WordPress sites. The 'utm_term' parameter in some URLs suggests a potential phishing or SEO manipulation tactic to lure users.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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://infrive.ru/uplcv?utm_term=data+communications+and+networking+5th+edition+solutions+pdf PDF link annotation
- https://study-abroad-travel.com/ckfinder/userfiles/file/xajapogugitiwepiw.pdfIn PDF document text
- https://anukulagrotech.com/userfiles/file/97961358471.pdfIn PDF document text
- https://www.icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/82418664755.pdfIn PDF document text
- https://imaggu.com/ci/userfiles/files/20544836203.pdfIn PDF document text
- https://prcomponents.com/ckfinder/userfiles/files/73752264397.pdfIn PDF document text
- https://dragonexpressml.com/userfiles/files/punuxozej.pdfIn PDF document text
- http://minhledtran.com/luutru/files/79993650907.pdfIn PDF document text
- http://mobiliteit.nu/files/kuxifosile.pdfIn PDF document text
- http://anabakorea.jp/userfiles/file/pebopujovaxet.pdfIn PDF document text
- https://nguyenhungstone.com/uploads/image/files/17847698325.pdfIn PDF document text
- http://ackerviewguesthouse.com/userfiles/file/49227639232.pdfIn PDF document text
- http://msslink.ru/userfiles/files/42951827867.pdfIn PDF document text
- https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/07d7ce1a8c672cac74be3de16f6a516b/61689147143.pdfIn PDF document text
- http://e3edu.vn/public/ckfinder/core/connector/php/connector.phppublic/uploadsfiles/wazogenofet.pdfIn PDF document text
- https://tlkingatlan.hu/kepek/other/file/43539018058.pdfIn PDF document text
- https://guruamardaspublicschool.com/userfiles/files/fowaxemotanako.pdfIn PDF document text
- http://fullx.net/files/kibenepibumoritanirekaf.pdfIn PDF document text
- https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/c8c498d150ccb22671082a73f15ce44f/jalepinuferu.pdfIn PDF document text
- https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1614f8269d0cb1---ronemimeb.pdfIn PDF document text
- http://alompar.hu/uploads/content_files/files/46783106517.pdfIn PDF document text
- https://aczv.fr/userfiles/file/36099020007.pdfIn PDF document text
- https://nyig.com/files/file/69775893962.pdfIn PDF document text
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff5ed35af1---xukix.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_off0000b490.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB490 | 11480 bytes |
SHA-256: 482a7cf77c232086b7369264881cd41395e055d518cc7391d2ba2b27e11fc72e |
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font_01_sfnt_off0000cf6b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF6B | 15120 bytes |
SHA-256: 6ddf79dc5ca3e257ff4843abbe12de1707697522c699e40e81338c6be0dd0452 |
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font_02_sfnt_off0000f606.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF606 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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