MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as a phishing trojan and ML classifiers indicated a high probability of maliciousness. It contains numerous external URIs, many of which are structured as link farms on disposable hosting, suggesting a phishing or malware distribution campaign. Embedded JavaScript streams were also detected, which could be used to further obfuscate the malicious intent or redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9829
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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://archism.ru/uplcv?utm_term=hungry+shark+2020+hack PDF link annotation
- https://iieng.org/editor/ckfinder/userfiles/files/70968236107.pdfIn PDF document text
- http://cheapmarkt.com/userfiles/file/99553102294.pdfIn PDF document text
- https://drhuanghair.com/uploads/files/202109092307017154.pdfIn PDF document text
- http://ldkxzzs.com/images/userfiles/file/tapomixeneduluru.pdfIn PDF document text
- http://zafirkort.com/uploads/files/15111342213.pdfIn PDF document text
- http://ibtaker.ps/userfiles/file/72536721363.pdfIn PDF document text
- https://investmentskillsgroup.com/images/userfiles/file/fetozaditabesive.pdfIn PDF document text
- http://xn--djr00fsyfv0o5qgy9u.com/filespath/files/20210903102020.pdfIn PDF document text
- http://ahknchem.com/upload/files/xexexuputusares.pdfIn PDF document text
- http://fuguchair.com/upfolder/e/files/20210917065033.pdfIn PDF document text
- https://kontiko.com/ktkweb3/images/upload/files/zumesit.pdfIn PDF document text
- https://groupunsur2.com/contents/files/96306744684.pdfIn PDF document text
- http://xaydungphongphu.com/uploads/files/89336778242.pdfIn PDF document text
- http://kmsenior.org/file/files/temavanal.pdfIn PDF document text
- http://zrdb-drogbud.pl/Upload/file/74450182846.pdfIn PDF document text
- https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161419de5261ee---sakatowovupuzo.pdfIn PDF document text
- http://gartenbaukoeln.de/uploads/files/malerorodinenisolomopop.pdfIn PDF document text
- https://mgs-on-track.com/uploads/misc/files/rubaxesi.pdfIn PDF document text
- http://bellina.pl/userfiles/file/43843823691.pdfIn PDF document text
- https://monamifrance.com/FileData/ckfinder/files/20210904_1063257E5C8B7D72.pdfIn PDF document text
- https://ebus.myskoolapp.com/FCKeditor/FCKimgUpload/file/muzotiken.pdfIn PDF document text
- https://borgopitti.it/userfiles/file/jivekene.pdfIn PDF document text
- http://blow-w124.com/js/upload/files/nizigave.pdfIn PDF document text
- https://songod.vn/uploads/image/files/26021703223.pdfIn PDF document text
- https://afritransport.com/app/webroot/files/file/68828764841.pdfIn PDF document text
- https://10kshot.com/customerinterview/ckfinder/userfiles/files/josebido.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_off0000cdc7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDC7 | 10560 bytes |
SHA-256: ec54631afab7713c4b11304efdd9bbcc2b68cc7908316a1eda9a34b98b763359 |
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font_01_sfnt_off0000e5d6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5D6 | 17332 bytes |
SHA-256: 611ff63f77cf334237f3a488d066e0078b6b0faa9dee7c664860256859c63091 |
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font_02_sfnt_off0001124a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1124A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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