MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was identified as malicious by ML classifiers and ClamAV, with a critical detection score. It contains numerous embedded URLs pointing to external PDF files, indicating a link farm or redirection mechanism. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically flags this behavior, suggesting an attempt to distribute malicious content or conduct phishing. The authoring application 'wkhtmltopdf' is not inherently malicious but can be used to generate documents for various purposes, including malicious ones.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 5
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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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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 http://ampletrekking.com/userfiles/file/kitigalolajuvexivowukivuf.pdf In PDF document text
- https://glearningsolutions.com/userfiles/files/45341080502.pdfIn PDF document text
- http://debeight.net/UserFiles/File/xefife.pdfIn PDF document text
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/d5bf1d6fb0669c4d5a34c84b1e475591/towimakofozusitafuxuvi.pdfIn PDF document text
- http://www.prodomasa.com/ckfinder/userfiles/files/2314353111.pdfIn PDF document text
- http://honeycontacts.com/uploades/userfiles/file/5496644726.pdfIn PDF document text
- https://carsen.sk/editor_uploads/system/files/84143988195.pdfIn PDF document text
- https://ximangcampha.vn/upload/files/14376009881.pdfIn PDF document text
- https://pro-biomed.com/admin/userfiles/file/49682089711.pdfIn PDF document text
- http://www.cavice.fi/tiedostot/files/remevukawub.pdfIn PDF document text
- http://someteme.com/archivos/_20210908164819.pdfIn PDF document text
- https://ddc-touggourt.dz/ar/files/45348534295.pdfIn PDF document text
- http://parkergeneralcontractors.net/userfiles/file/13441658972.pdfIn PDF document text
- https://ripedzn.com/app/webroot/files/fckeditor/file/90241837631.pdfIn PDF document text
- https://gsm.company/ckfinder/userfiles/files/65663847611.pdfIn PDF document text
- http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ac8235f285---voxikisavifogaze.pdfIn PDF document text
- http://www.biosafety.biz/ckfinder/userfiles/files/73994353100.pdfIn PDF document text
- http://polenes.cl/userfiles/file/wizumodip.pdfIn PDF document text
- https://yenhuy.vn/upload/files/8367695644.pdfIn PDF document text
- https://www.karelo.com/uploads/File/lelatefakewizamat.pdfIn PDF document text
- http://hiro-seiko.com/upload/files/7042834795.pdfIn PDF document text
- https://distriparkbotlek.nl/userfiles/files/63542914185.pdfIn PDF document text
- http://855solution.com/htdocs/cljr/data/files/81988682331.pdfIn PDF document text
- http://www.pattyn360.com/upload/forum/files/82572318666.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=adjectives+that+start+with+d+to+describe+a+person+positivelyPDF link annotation
- 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_off0000d4f1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4F1 | 17384 bytes |
SHA-256: 8598c64956afae8083ebe377c79f8189525a876fa48b6e44dbc2ec2511944042 |
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font_01_sfnt_off000101c3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101C3 | 11128 bytes |
SHA-256: 858c27c7f3886c0dda8fe4015f35b73f338db287022130e98d1f5c08a203037e |
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font_02_sfnt_off00011b7e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B7E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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