MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1190 Exploit Public-Facing Application
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The presence of embedded JavaScript and external URIs, combined with the 'Callback phishing phone lure' heuristic, strongly suggests an attempt to trick the user into initiating a fraudulent callback. The document body is heavily obfuscated, but the heuristics indicate a phishing or scam attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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://dzido.pl/userfiles/file/zelelafapujupinu.pdf In PDF document text
- http://gibisch.org/files/files/bufadixiwajaxop.pdfIn PDF document text
- http://aallergy.friend-match.com/upload/files/23106358743.pdfIn PDF document text
- http://nessium.fr/userfiles/file/396177913.pdfIn PDF document text
- http://gamboeng.com/assets/ckfinder/userfiles/files/49854064712.pdfIn PDF document text
- https://novinfasteners.com/userfiles/file/20618333112.pdfIn PDF document text
- http://hanboo.cn/Uploads/file/2021090822380570554.pdfIn PDF document text
- http://braciszewska-klimek.pl/fck_files/file/84177722768.pdfIn PDF document text
- http://radioevangilereal.com/assets/ckfinder/core/connector/php/uploads/files/16491291722.pdfIn PDF document text
- http://fresh-j.info/images/uploadedimages/file/mipulasujezasedo.pdfIn PDF document text
- http://taigesw.com/upload/files/rejupojokimuwag.pdfIn PDF document text
- http://strap.sk/uploads/files/92249487175.pdfIn PDF document text
- http://medicare-darmstadt.de/bilder/UserImages/file/gedenezufa.pdfIn PDF document text
- https://securitydm.rs/slicice/file/65578860283.pdfIn PDF document text
- https://landbar.com/app/webroot/js/ckfinder/core/connector/upload/files/661440539.pdfIn PDF document text
- https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613452756710e---88775991715.pdfIn PDF document text
- https://bursac.net/userfiles/file/51720821229.pdfIn PDF document text
- https://sikanderajam.com/Robinson/ckfinder/userfiles/files/nuputiv.pdfIn PDF document text
- http://playoz.com/ckfinder/userfiles/files/kawurosolusa.pdfIn PDF document text
- https://rwd1.thadv.com/upload/files/89822780744.pdfIn PDF document text
- https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/477e8ea4d520f1b335b20ad6e54f4408/4914073981.pdfIn PDF document text
- https://dmshospital.com/mm_engg/files/bibos.pdfIn PDF document text
- https://pezenasenchantee.fr/userfiles/file/kazuvutigexatoba.pdfIn PDF document text
- http://gardenofsound.com/userfiles/files/3835469873.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=apk+play+store+app+installPDF 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_off0000d8bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8BB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f0d2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0D2 | 10432 bytes |
SHA-256: 25a79b1ea4da72768214b8b294a300ca8bb00991effca88bc190dde8c7f4a504 |
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font_02_sfnt_off000108aa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108AA | 17432 bytes |
SHA-256: 9a710740698bb790b958021a760d80236ac14f455889de446da8b1b27a852e50 |
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