MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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://saigonford3s.com/uploads/2021-09-10/images/files/wavutigizumudovegulumoz.pdf In PDF document text
- http://goodwill.as/userfiles/file/67965607799.pdfIn PDF document text
- http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143923697121---pukumipezojalazikag.pdfIn PDF document text
- https://floridainvestment.cz/files/file/294523737.pdfIn PDF document text
- https://pet-fashion.ro/mm/file/tifegunux.pdfIn PDF document text
- http://csim.jp/ckeditor/uploads/files/juguzudofidovivup.pdfIn PDF document text
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161450a7ea34e4---21062167512.pdfIn PDF document text
- http://begues.mobi/userfiles/file/tepaf.pdfIn PDF document text
- http://worldtile.net/jangheung/userfiles/file/57090607448.pdfIn PDF document text
- http://anquocrealty.com/uploads/image/files/befuwixiwafu.pdfIn PDF document text
- http://cravaluos.com/ckfinder/userfiles/files/vifegemudu.pdfIn PDF document text
- http://veiligheidssloten.nl/ckfinder/userfiles/files/59450031369.pdfIn PDF document text
- http://barcabianca.eu/upload/file/boriporejigagujetozevimak.pdfIn PDF document text
- http://xn--3e0b556bhrbowi6undva.com/ckupload/files/80848700326.pdfIn PDF document text
- http://thumpamonpally.com/userfiles/file/ripufin.pdfIn PDF document text
- http://rosabaum.de/web/editor/files/jipubarazubidil.pdfIn PDF document text
- http://antasboru.com/guvennet/resimlerfiles/76629997153.pdfIn PDF document text
- http://veoguidecostarica.com/ci/userfiles/files/juxipowixabinezak.pdfIn PDF document text
- https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/scs0uuqprsnut5p9csni1kcjb7/vuvojelibod.pdfIn PDF document text
- https://gmt-tw.com/app/webroot/userfiles/files/muvumupumo.pdfIn PDF document text
- http://jmdfhjl.com/fckeditor/userimages/file/19954060747.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=secret+code+for+fortnite+v+bucksPDF 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_off0000bf97.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF97 | 16840 bytes |
SHA-256: c68bbeb2fc0bcca0f5dbfd8c10b6834b7e9f25e4a180e635346d72a7e55150dc |
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font_01_sfnt_off0000eada.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEADA | 10732 bytes |
SHA-256: 028b4d11b16358db9b2df38620129af3f7d1689e9d3bed4862eda37758388875 |
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font_02_sfnt_off000103ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103AE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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