MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is a PDF identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to lure users to malicious content. The presence of external URI heuristics and the compromised CMS upload link firing indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 http://infosierra.es/images/editor/43267429746.pdf In PDF document text
- http://yds-wcv.jp/free_images/files/38640256700.pdfIn PDF document text
- https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/0481e3d41a0193b45b8923921a5dfec4/ruropulajigam.pdfIn PDF document text
- http://soeurs-scjboran.fr/soeurs/upload/files/bitepomedawigefupalinokux.pdfIn PDF document text
- http://kammerchor-lindau.com/file/44006912345.pdfIn PDF document text
- http://marcth.pl/media/fck/file/43801003878.pdfIn PDF document text
- http://ippon.lv/uploads/File/tavakox.pdfIn PDF document text
- https://tapetcenter.ro/app/webroot/files/userfiles/files/balemidasodesuvoxewif.pdfIn PDF document text
- http://melabo.com/upload/files/67727530602.pdfIn PDF document text
- http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613eb1502656d---66869092617.pdfIn PDF document text
- http://reelproductionshd.com/userfiles/file/puluxoxaxidog.pdfIn PDF document text
- https://sklepbonus.eu/userfiles/file/37176090963.pdfIn PDF document text
- https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/2erne8qjovd9jd9g53pdl1e08p/nizavefutibigemaj.pdfIn PDF document text
- http://www.instalacionescueto.com/nueva/ckfinder/userfiles/files/88669717814.pdfIn PDF document text
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/sn30g113irse40448be1ronep9/jomevate.pdfIn PDF document text
- https://5ky13lu3-1251.com/contents/files/nuguxalirukesusurema.pdfIn PDF document text
- http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613efd2b0bffe---71103816546.pdfIn PDF document text
- https://sentinels.ro/userfiles/file/pufopubirivodujadomuvati.pdfIn PDF document text
- http://toanthinh.vn/webroot/img/files/fusapudetejunulimis.pdfIn PDF document text
- https://signika.pl/Upload/file/30129506345.pdfIn PDF document text
- https://latework.cz/soubory/28756557234.pdfIn PDF document text
- http://dobraukraina.org/sites/all/sites/dobraukraina.org/files/dakomatosi.pdfIn PDF document text
- http://www.lukoilmarine.com/ckfinder/userfiles/files/sorilufube.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=nfs+no+limits+mod+apk+android+1PDF 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_off0000b0af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0AF | 14324 bytes |
SHA-256: 4f5b2e921379956d9bf2d97dc6ff059cbe47127965cb9689c76a76c79e47be1f |
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font_01_sfnt_off0000d48d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD48D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000eca4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECA4 | 10648 bytes |
SHA-256: e852b8b937b6e16c06c53d87b3aba9b8a5864bf6b12e4780f99e810f7d22ad68 |
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