MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on potentially compromised or disposable domains, suggesting a link farm or phishing lure. The presence of PDF-specific heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, indicating the PDF is used to redirect users to malicious content. No scripts were extracted, but the overall structure points to a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9911
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=redmobiletv+apk+download PDF link annotation
- https://sportcity.bg/webroot/img/content/files/kilogilav.pdfIn PDF document text
- http://wellfoto.cz/pictures/files/lotuvalatawiweropi.pdfIn PDF document text
- http://xn--9w3b270a7kf.kr/ckfinder/userfiles/files/zoraro.pdfIn PDF document text
- https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/444e015203daeb9fbfe7e3e9ac98b6b1/finagovomex.pdfIn PDF document text
- http://yousefmaktabi.com/ckfinder/userfiles/files/zobitufirijuposurafat.pdfIn PDF document text
- https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/161463cc240f1e---15562654674.pdfIn PDF document text
- http://ohmytour.kr/FileData/ckfinder/files/20210903_D051E0EDBDB78D2C.pdfIn PDF document text
- https://www.loisirs-auto-occasion.fr/ckfinder/userfiles/files/56367321703.pdfIn PDF document text
- http://vetportonaccio.it/userfiles/files/23612926373.pdfIn PDF document text
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131d3f8daad1---33247394945.pdfIn PDF document text
- http://ntouioc.ntou.edu.tw/ckfinder/userfiles/files/xozelefirun.pdfIn PDF document text
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/161473826003cd---velanigerojenipelanopowe.pdfIn PDF document text
- https://laatuwhuisweerstralen.nl/upload/file/19745041098.pdfIn PDF document text
- http://fvv-hohenfelde.de/sites/default/files/files/29979357959.pdfIn PDF document text
- https://bokaichenyu.com/upload/files/19491073621.pdfIn PDF document text
- http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614826f2e5b02---xuvifoduxoziku.pdfIn PDF document text
- https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/6k74u6fp94l5rsedsjg7ck2blb/tuvasala.pdfIn PDF document text
- http://fli.edu.mn/ckfinder/userfiles/files/47802193815.pdfIn PDF document text
- http://lucchetta.net/userfiles/files/50247968913.pdfIn PDF document text
- http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bde13ad73d---99772260295.pdfIn PDF document text
- http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612edd4712633---7923604309.pdfIn PDF document text
- https://biographiewerkstatt-singer.de/userfiles/file/xozojepib.pdfIn PDF document text
- https://mercerapparelss.com/userfiles/files/rupijukejebopomojirejimon.pdfIn PDF document text
- http://iscelenie.info/files/file/tovopotepekipedos.pdfIn PDF document text
- https://kemxoithanhhang.vn/app/webroot/files/images/pages/files/lutanew.pdfIn PDF document text
- http://digitalqwerty.com/ckfinder/userfiles/files/95455348759.pdfIn PDF document text
- http://108shiva.com/userfiles/file/In 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_off0000d7e1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7E1 | 17868 bytes |
SHA-256: f55184494caa1502b68d5086c379ab4a62f4264742a791819bb7f71c1b2ddccc |
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font_01_sfnt_off000105dd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105DD | 10712 bytes |
SHA-256: 1e0b8157ea2809cd28b50503b36fd222615956ca155c419a0990ad83c085ccc7 |
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font_02_sfnt_off00011e40.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E40 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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