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 or trojan variant. Heuristics indicate the document functions as a link farm, directing users to multiple external URLs, some hosted on compromised WordPress sites or disposable domains. The presence of numerous links, including 'utm_term' parameters, suggests an attempt to drive traffic for malicious purposes, likely phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://coretry.ru/uplcv?utm_term=pop+os+file+manager PDF link annotation
- http://abyss.sk/userfiles/file/41033757882.pdfIn PDF document text
- http://hnfhdc.com/UpLoadFile/2021091706545856721.pdfIn PDF document text
- http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/16150332b888d5---16214908376.pdfIn PDF document text
- https://aarhuskortet.dk/images/file/3680549802.pdfIn PDF document text
- http://parbatsamajjapan.com/img/files/files/melagolojumad.pdfIn PDF document text
- https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/ncvi1in6h6f5lkhumbarghe7l1/81110956047.pdfIn PDF document text
- https://asiastudy.in/ckfinder/userfiles/files/potemutegifodejop.pdfIn PDF document text
- https://dadrarad.ro/userfiles/file/xabiboberawadewofat.pdfIn PDF document text
- http://www.hgbehringer.de/img/files/files/23077433250.pdfIn PDF document text
- http://gsmontaggi.it/userfiles/files/kuxonubaje.pdfIn PDF document text
- http://izeninfo.net/admin/upload/files/5520619932.pdfIn PDF document text
- http://greatwalledmond.com/ckfinder/userfiles/files/masasosu.pdfIn PDF document text
- https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/161429c3c7de4b---43643322841.pdfIn PDF document text
- http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16139d55778f36---97109444609.pdfIn PDF document text
- https://rux-thai.com/ckfinder/userfiles/files/49927581822.pdfIn PDF document text
- http://www.elstar.ru/uploads/files/bojigatarevuriliwapofebuv.pdfIn PDF document text
- http://kanizsakran.hu/userfiles/file/xibatuloraroz.pdfIn PDF document text
- https://newshieldinsurance.com/demo/gsa/final/images/file/xalalexorawugokapuwabixux.pdfIn PDF document text
- http://escrima-rlp.de/userfiles/file/52797754183.pdfIn PDF document text
- https://hogies.com/includes/template/uploads/file/51653925328.pdfIn PDF document text
- http://rulada.by/upload/editor/files/naromojexasawe.pdfIn PDF document text
- http://udelimpa.es/ckfinder/userfiles/files/41078248382.pdfIn PDF document text
- http://anduong-nhatthanh.com/uploads/news_file/81354087651.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_off0000b8d5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB8D5 | 10604 bytes |
SHA-256: ae91954e0c1049ae9c4178d151699b297c694428c30600df89e746d62612eb9f |
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font_01_sfnt_off0000d0ff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0FF | 20424 bytes |
SHA-256: 8af8a0d2cd4bd89651c58966d43099e43d68b8dfd75348ca2223444d2fd27c30 |
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font_02_sfnt_off0001062c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1062C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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