MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous URLs, many pointing to compromised CMS uploads or disposable hosting, suggesting it functions as a link farm. The presence of external URIs and link farm heuristics indicates a likely attempt to redirect users to malicious sites for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://infrive.ru/uplcv?utm_term=classical+dynamics+of+particles+and+systems+pdf PDF link annotation
- https://adium.ru/userfiles/file/kaxevakumefe.pdfIn PDF document text
- https://tootooair.com/FileData/ckfinder/files/20210918_04514D9FCCD4D8BF.pdfIn PDF document text
- https://superpart.com/files/50908715579.pdfIn PDF document text
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161420a28ea4d1---67434546936.pdfIn PDF document text
- http://thrifthelp.com/flash/thrifthelp.com/file/49002288712.pdfIn PDF document text
- http://circolonauticofavignana.it/userfiles/files/43414830626.pdfIn PDF document text
- https://museuminiaturesbesalu.com/files/sulexekafaw.pdfIn PDF document text
- https://www.andreivieru.com/ckfinder/userfiles/files/bexelubenufelowivagev.pdfIn PDF document text
- https://frutalmente.pt/site/upload/file/23804917925.pdfIn PDF document text
- http://yuanjen.com/ckfinder/userfiles/files/62800888762.pdfIn PDF document text
- http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1614f73435c298---nijazoguxemezuvadas.pdfIn PDF document text
- http://stitesattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kovemifivosasejix.pdfIn PDF document text
- http://luchetti.it/userfiles/files/vusobi.pdfIn PDF document text
- https://projektovanje.info/userfiles/file/veseresidajifebefarob.pdfIn PDF document text
- http://dh-life.com/ckfinder/userfiles/files/ravime.pdfIn PDF document text
- http://wowbond.com/upload/Fckeditor/file/20289202295.pdfIn PDF document text
- https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/e22d1a6f3ee9290c8ace0d402218cc5f/98840952595.pdfIn PDF document text
- https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/5a67ed4af627707ff4f1cf223e0f35c1/5697142849.pdfIn PDF document text
- http://epilia.com/upload/FCKEditorfile/xuwunomovapok.pdfIn PDF document text
- http://godsownproperties.com/userfiles/file/kureje.pdfIn PDF document text
- http://vet-arrighicolangelicristilli.eu/userfiles/files/zenezisofijal.pdfIn PDF document text
- http://boekenwinkelindex.nl/images/uploads/43227424417.pdfIn PDF document text
- https://brahmagnanam.org/fck_uploads/file/23946532863.pdfIn 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_off0000b571.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB571 | 17740 bytes |
SHA-256: 77006ed15d0e2ebf32ca7b828b5715c1e2c8d9c5ed7f362bbd15cd72fea10f10 |
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font_01_sfnt_off0000e336.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE336 | 10928 bytes |
SHA-256: e5ea13e7c247ebc65784caa0229014fb7106f2238ce5f29e85125ba084da998e |
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font_02_sfnt_off0000fc8c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC8C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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