MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file contains embedded JavaScript and multiple external URIs, indicating it is likely used for phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links on potentially untrustworthy domains. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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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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://allytemp.ru/uplcv?utm_term=history+of+the+american+economy+13th+edition+pdf PDF link annotation
- http://ahzycw.com/upload_fck/file/2021-9-14/20210914180743695753.pdfIn PDF document text
- https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/c73e1d6adde770c1f252851161f28653/54108540853.pdfIn PDF document text
- http://topmebli.com/content/xuploadimages/file/39065288010.pdfIn PDF document text
- https://eravukappalpalli.com/userfiles/file/welanulejejimodanowan.pdfIn PDF document text
- https://pelletier-tp.fr/ckfinder/userfiles/files/tiribik.pdfIn PDF document text
- http://evergreendentistryva.com/app/webroot/js/ckfinder/userfiles/files/milubasikufilasulefuxi.pdfIn PDF document text
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140fd7c55d5a---kunobotizajalavetawepojol.pdfIn PDF document text
- http://www.accessibilite-salle-eau.com/ckfinder/userfiles/files/11067754701.pdfIn PDF document text
- http://gazetavk.ru/img/file/81657521718.pdfIn PDF document text
- http://cosyromania.com/media/file/diluvixugelafawazivamiwi.pdfIn PDF document text
- http://5percent-design-action.com/upload/users/files/99587066669.pdfIn PDF document text
- https://a-guskov.ru/uploads/files/89211395121.pdfIn PDF document text
- http://zhjpharm.com/upload/files/92754264231.pdfIn PDF document text
- https://kiptep.ru/file/libesu.pdfIn PDF document text
- https://phnews.ro/files/file/bigelaweron.pdfIn PDF document text
- http://npi-management.com/ressource/site-image/files/sazifixewegejotomuv.pdfIn PDF document text
- http://w3-japan.com/js/upload/files/xowofunalupe.pdfIn PDF document text
- https://client-sms.com/ckfinder/userfiles/files/kobewed.pdfIn PDF document text
- http://good163.cn/Uploadfiles/files/lonasegixe.pdfIn PDF document text
- http://csc0851.com/userfiles/file/20210902191648_gaufv4.pdfIn PDF document text
- http://alphanaturehk.com/userfiles/file/naxepuforij.pdfIn PDF document text
- http://www.dgtrans.co.th/login/ckfinder/userfiles/files/godalerebikepumiwibereri.pdfIn PDF document text
- https://santaclara.com/wysiwygfiles/file/59841068063.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_off0000cf0c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF0C | 11168 bytes |
SHA-256: 063e5251a8d8248d911db4d52e515e6dd2e7fecb69a069904773636fdfbe9f26 |
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font_01_sfnt_off0000e913.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE913 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010125.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10125 | 18328 bytes |
SHA-256: 5203af51873ec3fae5084978fb0f7f715cce068025ce872a09f30eb73dfacfe0 |
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