MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and multiple external URIs, with a high ML classifier score and ClamAV detection indicating malicious intent. The 'SE_CALLBACK_LURE' heuristic strongly suggests a callback phishing or tech-support scam, where the embedded JavaScript likely facilitates the execution of malicious code or redirects the user to a malicious site. The document body is heavily obfuscated and unreadable, preventing a direct analysis of its content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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 http://nattuvaartha.com/assets/ckfinder/core/connector/php/uploads/files/viludi.pdf In PDF document text
- https://springkasteelhuren.be/userfiles/file/noluvobiw.pdfIn PDF document text
- http://cosonhuath.com/hinhanh_fckeditor/file/vofilavixoliludupepa.pdfIn PDF document text
- https://lufty.cz/UserFiles/files/goxoden.pdfIn PDF document text
- https://fo-prefectures.com/pages/files/lekawexemuxedudif.pdfIn PDF document text
- https://avistravel.activsport.ro/userfiles/file/borajasomewezuverelejuv.pdfIn PDF document text
- https://www.jnvhardoi.org/ckfinder/userfiles/files/91123292557.pdfIn PDF document text
- https://e-tta.com/app/webroot/userfiles/files/diporunijamep.pdfIn PDF document text
- https://thai-airpark.com/ckfinder/userfiles/files/41308145189.pdfIn PDF document text
- https://hatinhjobs.com/upload/files/12016959894.pdfIn PDF document text
- http://zhjpharm.com/upload/files/kototisewelubinuwuni.pdfIn PDF document text
- http://gazdalkodjokosan.hu/img/userfiles/file/39950117257.pdfIn PDF document text
- http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb2047d8bc---paxitogumajo.pdfIn PDF document text
- https://solturism.ro/images/file/75199792564.pdfIn PDF document text
- http://maekalocal.com/Maeka/UserFiles/File/zubebavepugadikun.pdfIn PDF document text
- https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/7ae3c0cbbf64523cc3cfaa1dff9fd5d0/kumusesejugikitibonep.pdfIn PDF document text
- http://gldbirdgel.com/user_img/files/zadatekufabudegutufasosum.pdfIn PDF document text
- http://saraya-shop.ru/upload/files/dufijubodidodozubomufut.pdfIn PDF document text
- http://nppgursaraijhansi.in/ckfinder/userfiles/files/baxapigaxafadow.pdfIn PDF document text
- http://speed-r.com/js/upload/files/dubazaninugefajabu.pdfIn PDF document text
- https://www.leadercaravans.com.au/application/third_party/ckfinder/userfiles/files/58255217259.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=racing+truck+hill+climb+2PDF link annotation
- 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_off0000add5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xADD5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c5ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC5EC | 10752 bytes |
SHA-256: 052abe204222f9f30683170ae993e8cb0c2c7f822b491af3e96370f304884216 |
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font_02_sfnt_off0000de7a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE7A | 15784 bytes |
SHA-256: 860b45c28822e2a971a2594039840d65d8391fef4109b7bfe3e176dff20fc105 |
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