MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
This PDF file exhibits malicious characteristics, including a malformed stream and ML classification indicating high suspicion. It contains a link farm with numerous URLs, suggesting an attempt to direct users to potentially malicious websites for phishing or malware delivery. The presence of external URIs and the overall structure point towards a phishing or credential harvesting campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 7
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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://someteme.com/archivos/_20210901230122.pdf In PDF document text
- https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/872nccbk472t79suo1m7fv8hgd/44876529778.pdfIn PDF document text
- http://pyramidplaster.com/file_media/file_image/file/83638706409.pdfIn PDF document text
- http://getrade.net/uploadfiles/file/38886886516.pdfIn PDF document text
- https://laatjehuisweerstralen.nl/upload/file/62208569666.pdfIn PDF document text
- http://acutecardio.ru/sadm_files/33380023611.pdfIn PDF document text
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/161392919b3891---fejezivifarelozutex.pdfIn PDF document text
- https://healthmatters.me/userfiles/file/76242840611.pdfIn PDF document text
- http://jmlukanich.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wuwazumuxedoxofemozenes.pdfIn PDF document text
- http://scales-center.com/shop/fck_file/file/81299501974.pdfIn PDF document text
- http://minipit.com/data/files/5748560351.pdfIn PDF document text
- http://agama-rc.com/upload/files/2703797626.pdfIn PDF document text
- http://proxima-design.cz/files/file/98439557308.pdfIn PDF document text
- http://lightofislamonair.org/uploads/files/voraseki.pdfIn PDF document text
- https://bienenaktuell.com/sites/bienenaktuell.com/files/file/berubakilavipu.pdfIn PDF document text
- http://jucal.es/images/file/mulukafumemalov.pdfIn PDF document text
- http://willettelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/80861636810.pdfIn PDF document text
- https://studybrilliant.online/app/webroot/img/userfiles/file/18579526795.pdfIn PDF document text
- http://adhunikjewellers.com/ckfinder/userfiles/files/76504288732.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=idm+plus+for+androidPDF link annotation
- https://tes-sys.com/uploads/ckfinder/files/20210903/16306254718901.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_off0000e6eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6EB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fefd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEFD | 17296 bytes |
SHA-256: cc80ec77d3b4008eb0d959b9651767b6b54982038d02122e09aff9f95102b559 |
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font_02_sfnt_off00012ba4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BA4 | 10480 bytes |
SHA-256: a109e7c3fca16032f05d3128ac89132af0602bfc2926250a2b2b6b64d2a520a2 |
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