MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites, suggesting a phishing or redirection campaign. The document body is heavily obfuscated and unreadable, indicating an attempt to hide its true purpose, likely involving the embedded URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://ketchas.ru/uplcv?utm_term=fraction+and+decimal+worksheets+4th+grade
- http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160b3bf8ce5efe---dikikojozidejikugekuru.pdf
- http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba58bfe4b98---71953146891.pdf
- https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/oh0764plb2v6sm84q9qo1k41rj/naxixililij.pdf
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d1c4c6da4---27521121387.pdf
- http://alexanderkanevskyartistbiography.com/clientMedia/file/57759183665.pdf
- http://rudolphalexander.com/uploads/files/48393821595.pdf
- https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d62b6e6fcb8---61205671760.pdf
- http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/161056cafddc4c---rotijemej.pdf
- https://fasaac.org/temp//files/43103048220.pdf
- http://apexnepaltravel.com/userfiles/file/tedimobamupeb.pdf
- http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab675707788---74716013189.pdf
- http://longchimvac.net/app/webroot/uploads/files/46493303712.pdf
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a7943311c8a---rutagepafuk.pdf
- https://www.domaine-boussard-chablis.fr/ckfinder/userfiles/files/lukibefogomevetirilip.pdf
- https://mediaget.ru/userfiles/files/wagajos.pdf
- https://autonoleggioassereto.com/file/85788469460.pdf
- https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/cd162ef862d3b1a5c6551920f7357cd8/66946864339.pdf
- http://rosniyom.com/userfiles/files/bizukofimomixiserogaxa.pdf
- https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/3bd4ee8190ae6cd5f936dd976d12e8bb/sefiriluwawutu.pdf
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160974898214a0---nisewifuxitamodapetov.pdf
- http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca3b511172d---20807992911.pdf
- https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4b64701b66---gavijojo.pdf
- http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bccfaa52eb0---18978480835.pdf
- http://cluster006.ovh.net/~greeters/namur/ckfinder/userfiles/files/14402313693.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d27e.bin7190435dfe66c6dcf6c84e06e024eade2d2d8f5a83a8355a840d1aafab40ee7b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD27E | 18288 bytes |
font_01_sfnt_off00010177.bind34545facc5b1c976441643065db4ce9d6a7495545b4bbd3c38717cdc0d9257d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10177 | 11052 bytes |
font_02_sfnt_off00011ae4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11AE4 | 16792 bytes |
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