MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which are part of a link farm hosted on disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The heuristic 'SE_CALLBACK_LURE' suggests a social engineering pretext, possibly to trick users into calling a fraudulent support number.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 7
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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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://queure.ru/uplcv?utm_term=imposter+among+us+online PDF link annotation
- https://imagebeaute.fr/userfiles/file/65445857156.pdfIn PDF document text
- http://neoneophytou.com/ckfinder/userfiles/files/56844821480.pdfIn PDF document text
- https://coopinproject.eu/ckfinder/userfiles/files/97324889778.pdfIn PDF document text
- https://mahanakhon.pacedev.com/ckupload/files/24913014187.pdfIn PDF document text
- http://bkmarine.net/ckfinder/userfiles/files/1631261336.pdfIn PDF document text
- http://sziszolg.hu/editor_up/suxunagujomemozumamimoguv.pdfIn PDF document text
- http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/717db9101d7dde91aeb9de36baeb793d/pidolimufuvanu.pdfIn PDF document text
- http://huabulaw.com/uploadpic/2021-9/file/2021090904462573499.pdfIn PDF document text
- http://hanart21.com/files/userfiles/file/91459319342.pdfIn PDF document text
- http://magdrywall.com/project-new/christianbook/upload_images/file/vavota.pdfIn PDF document text
- http://sutipatika.hu/userfiles/files/61373075876.pdfIn PDF document text
- http://nwatchonline.net/userfiles/file/fatawuzevoripadinobuje.pdfIn PDF document text
- http://mylivediamondinventory.com/uploads/files/nonanasasamezamete.pdfIn PDF document text
- http://alituncer.com/userfiles/file/92197100231.pdfIn PDF document text
- http://gianniarnaudo.com/userfiles/files/27763272414.pdfIn PDF document text
- http://xn----8sbfeahwarn6ac1adp3fb2p.xn--p1ai/userfiles/file/839790069.pdfIn PDF document text
- http://nagakuratrading.com/js/upload/files/65581128844.pdfIn PDF document text
- https://currenwatch.myhost360.cn/file/upload/files/09-12-22-48-19-43.pdfIn PDF document text
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613de6a3c4cf3---fezudagewo.pdfIn PDF document text
- https://hippodrome-compiegne.fr/www/uploads/file/solefiroku.pdfIn PDF document text
- http://assessmentinsight.com/ckfinder/userfiles/files/ruvigam.pdfIn PDF document text
- https://nordavril.com/userfiles/file/zawugazawokodobokawivalug.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_off0000de30.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE30 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f647.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF647 | 10648 bytes |
SHA-256: a73873ba19e0e076c8fbc2ecd91bf9f4cf9585ea5122250ce05dd6c610faa867 |
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font_02_sfnt_off00010e97.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E97 | 17808 bytes |
SHA-256: 449d3f867780ed66568426590e004be6ee4e8778b5d19258fc4e08f305327eee |
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