MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and is identified as a phishing lure due to its small size and image-heavy content, typical of a screenshot designed to trick users into clicking a link. The document body is heavily obfuscated, but the presence of a PDF_RANDOM_URL_LINK heuristic firing indicates a link to an algorithmically-generated URL, likely leading to a malicious payload. The ML classifier and ClamAV detection further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 8
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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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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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://www.tecnobor.com/ckfinder/userfiles/files/zemaviwosu.pdf
- http://china-baby-clothes.com/d/files/muwudesa.pdf
- http://medical-1669.com/userfiles/files/loragabirinawadok.pdf
- https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/7cbbfbe922e6cc89a76b0b237ec49ed4/31259255903.pdf
- http://xn--b1afklwjc5g.xn--p1ai/ckfinder/userfiles/files/61979507551.pdf
- https://ms02bet.net/contents/files/4272595338.pdf
- http://dotbamboo.com/file_media/file_image/file/57481191853.pdf
- http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/65599191659.pdf
- http://ambulatorioveterinariosantanna.eu/userfiles/files/22970100098.pdf
- http://www.verneteco.com/ckfinder/userfiles/files/81075960383.pdf
- http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/16131bbbdcf55b---semaretozawobor.pdf
- http://veterinariacasettamattei.it/userfiles/files/44091565504.pdf
- http://cissi.it/userfiles/files/nuduzebale.pdf
- https://meesens.be/KrMee/Tekstverwerker/42149420112.pdf
- http://sieuthibongda.net/ckfinder/userfiles/files/85069004021.pdf
- https://www.karelo.com/uploads/File/kadop.pdf
- https://martabaktelor.com/contents/files/ximifipizotowawete.pdf
- http://daisin1977.com/js/upload/files/17733918696.pdf
- https://www.solucionaesp.com/ckfinder/userfiles/files/sotelenumazegipaxase.pdf
- http://enewind.com/pliki/file/dugumubutejeko.pdf
- http://factory-01.com/js/upload/files/15921598471.pdf
- https://bywuf.org/upload/editor/files/47409378054.pdf
- https://aradovan.com/userfiles/file/76715620547.pdf
- http://furnitura-syndicat.ru/ckeditor/ckfinder/core/connector/php/uploads/files/fekapixafineb.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=fluid+mechanics+project+topics+pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b32c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB32C | 16792 bytes |
font_01_sfnt_off0000cb43.bince8627ec268970cc046bae701a9c4c8b3ac86d44450c2198af8befd74acc75ff |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB43 | 11092 bytes |
font_02_sfnt_off0000e4d2.bin29cddaba67b4d41b7e0f9cff54d9eab267c279a4e378342e09063a7cfc6bc6ed |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4D2 | 13908 bytes |
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