MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV and an ML classifier as malicious. It contains numerous embedded URLs pointing to various domains, many of which are identified as a link farm on disposable hosting. The primary URL, 'https://coretry.ru/uplcv?utm_term=orfox+tor+browser+for+android+download', suggests a lure to download software, likely malicious or unwanted. The PDF structure and extensive use of external links indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9943
Heuristics 5
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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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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://coretry.ru/uplcv?utm_term=orfox+tor+browser+for+android+download PDF link annotation
- http://vuoncotichdep.com/upload/files/9442441024.pdfIn PDF document text
- https://mintedimages.com/ckfinder/userfiles/files/wugatunemusimegegi.pdfIn PDF document text
- https://ajambary.com/userfiles/file/daniwoxalusota.pdfIn PDF document text
- http://gyogytornasz.hu/editor_up/56053844185.pdfIn PDF document text
- https://muzpony.de/obrazki/file/50541963096.pdfIn PDF document text
- https://arhometutor.com/userfiles/file/galapewiribibefesu.pdfIn PDF document text
- https://tour-paris-guide.com/cite_imgs/file/40746298091.pdfIn PDF document text
- http://czechdidgeridoo.com/admin/upload/file/mafowufogogisubolat.pdfIn PDF document text
- http://www.oomedia.com.tw/ckfinder/userfiles/files/78215178123.pdfIn PDF document text
- http://tinhdauvietnam.vn/upload/files/37517397231.pdfIn PDF document text
- http://carrollcountylawyers.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sosajobelanojamugem.pdfIn PDF document text
- http://www.libroparlatolions.it/backoffice/ckfinder/userfiles/files/dinirugikatifaf.pdfIn PDF document text
- https://rugsdirect4u.com/uploadedfiles/file/zukopapefik.pdfIn PDF document text
- https://ajwatravel.com/wheelmarine/userfiles/file/92161728771.pdfIn PDF document text
- https://igk-lilienthal.de/downloads/wofujibagafo.pdfIn PDF document text
- http://www.yemany.com/yemfiles/files/2957925572.pdfIn PDF document text
- https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16139498c6cefa---zigetukawuribijopibazo.pdfIn PDF document text
- https://newcar-rental.com/uploads/files/202109100318316805.pdfIn PDF document text
- http://caycanhtuyhien.com/uploads/image/files/16973111626.pdfIn PDF document text
- https://mtestbd.com/assets/uploads/files/gepufaxonoxagefepa.pdfIn PDF document text
- http://szpitalstrzelin.pl/userfiles/files/xudomuwiv.pdfIn PDF document text
- https://htijsr.com/userfiles/file/65159791991.pdfIn PDF document text
- http://votejoedestefano.com/editorData/file/rupuvezifix.pdfIn PDF document text
- http://www.petersonassoc.com/emailimages/file/55106729150.pdfIn PDF document text
- https://xn--nmqu14inmf.com/upload/files/gixikepekoxigarij.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_off0000c1e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1E3 | 10700 bytes |
SHA-256: 81225cce7c9b73aa5b5d374d4fe934f2180f4eae1a0f12fad89cac337b48387f |
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font_01_sfnt_off0000daa4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAA4 | 20252 bytes |
SHA-256: 05b5ecdd3734647194788bf89ad5a912a303ca75a21d6b6766e88eee3cf0e1a7 |
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font_02_sfnt_off00010f23.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F23 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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