MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs that point to other PDF files hosted on compromised websites, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely serving as a lure for phishing or malware delivery. The primary attack pattern involves redirecting users to potentially harmful external resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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 https://wastran.ru/uplcv?utm_term=systems+analysis+and+design+7th+edition+solution+manual PDF link annotation
- https://hkfew.org.hk/ckfinder/userfiles/files/33939858354.pdfIn PDF document text
- http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e9d1be1a84---tulemeradowaxonubuve.pdfIn PDF document text
- http://av72-reklama.ru/userfiles/file/1626986489a468d3aeeda0593ba90b.pdfIn PDF document text
- https://galedo.cz/www/data/cms_files/files/83853783164.pdfIn PDF document text
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160dd7655cc0c3---niruvujibuka.pdfIn PDF document text
- http://sklepjola.pl/userfiles/file/51654281813.pdfIn PDF document text
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/2v0biukravli0uqu1n0uv1pp1a/48020465286.pdfIn PDF document text
- https://diedacorporation.net/freesiafiles/file/kufurugiwemipavos.pdfIn PDF document text
- http://ifa-astrologie.de/userfiles/file/pivalujorurad.pdfIn PDF document text
- https://skatrip.com/basefile/skatripcom/files/zevero.pdfIn PDF document text
- http://tcurryproperties.com/konadnew/userfiles/file/fopofimumadirazoxawovet.pdfIn PDF document text
- http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/38653320860ca5063da323.pdfIn PDF document text
- http://ballmillfactory.com/d/files/30279679068.pdfIn PDF document text
- https://fotojursa.cz/userfiles/file/dipadadozuzewizepato.pdfIn PDF document text
- http://hnkingdee.cn/Files/file/202152422349.pdfIn PDF document text
- http://maiodi.com/userfiles/files/rejudawemipezu.pdfIn PDF document text
- http://xn--h1acbpobggs.xn--p1ai/data/files/99064428398.pdfIn PDF document text
- https://psychotherapie-coeppicus.ch/userfiles/files/zixomenanosuges.pdfIn PDF document text
- http://hndgyl.com/v15/Upload/file/2021627547346866.pdfIn PDF document text
- https://xpress2.eu/ckfinder/userfiles/files/vaverikum.pdfIn PDF document text
- http://d4smontreal.com/clients/f/f5/f58105ca183540932673f5bf18e62671/File/79332192124.pdfIn PDF document text
- https://luatsuavina.com/userfiles/file/menunesup.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_off0000df29.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF29 | 16836 bytes |
SHA-256: 2b0e8d202af51d33e649ff284ab3b9a4fbda1d9da1df85132c2da7dd0253f96c |
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font_01_sfnt_off00010a8e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A8E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000122a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122A5 | 10936 bytes |
SHA-256: 2cd728cfc8fc9931501243bb189907ca38e99bef386998062814d2b997ffe6e6 |
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