MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is identified as malicious by ClamAV and an ML classifier, with high-severity heuristics indicating embedded JavaScript and a link to an algorithmically-generated URL. The PDF also functions as a link farm on disposable hosting, suggesting an attempt to redirect users to malicious content. The embedded JavaScript likely facilitates the download and execution of a second-stage payload from the identified URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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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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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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://robvancampen.nl/userfiles/file/julitororos.pdf In PDF document text
- https://wecareprogram.org/images/file/jevib.pdfIn PDF document text
- https://www.singaporemedicalclinic.com/ckfinder/userfiles/files/20776489698.pdfIn PDF document text
- http://puntolinea.org/userfiles/files/folavo.pdfIn PDF document text
- http://medicapoland.pl/uploaded/file/76717286776.pdfIn PDF document text
- http://www.herbertvanderbrugghen.nl/draft/93767443036.pdfIn PDF document text
- https://didacostruzioni.it/userfiles/file/21760123473.pdfIn PDF document text
- http://freetds.net/userfiles/file/6192950783.pdfIn PDF document text
- http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/fa245797c02f663b6f9574dc7d411927/32174566850.pdfIn PDF document text
- https://vegastel.eu/components/com_mijoshop/opencart/image/data/files/37901496680.pdfIn PDF document text
- https://zlato-eu.cz/upload/files/46971332332.pdfIn PDF document text
- http://omgmediatank.com/userfiles/files/nanigakomuwumud.pdfIn PDF document text
- http://m-styleauto.com/js/upload/files/4717670793.pdfIn PDF document text
- https://mar3ol.com/Files/files/79556920241.pdfIn PDF document text
- http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/161392b53a8bb5---tudugadox.pdfIn PDF document text
- http://a-mega.ua/images/uploads/file/95220453097.pdfIn PDF document text
- http://titadoorbinhduong.com/upload/files/69988762798.pdfIn PDF document text
- http://www.contal-farmer.com/uploads/files/vefepurabusipelob.pdfIn PDF document text
- https://praktijk.zorglink.nl/ckfinder/userfiles/files/75993260879.pdfIn PDF document text
- https://sharedsynergy.com/userfiles/file/83076532436.pdfIn PDF document text
- https://venusnvs.com/userfiles/file/12600491630.pdfIn PDF document text
- http://calisnt.com/uploads/files/tewusijomutegerolix.pdfIn PDF document text
- https://umiyawoodworks.com/fckdb/userfiles/file/65138491673.pdfIn PDF document text
- http://lucidareemantenerepavimentifaidate.it/userfiles/files/85417102287.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=mulan+123+free+moviesPDF 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_off0000eb5b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB5B | 18624 bytes |
SHA-256: 8a1e6700d984edd3cbdaec7891cff3fddbbd4b682bc35329458cb487e73e3e2d |
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font_01_sfnt_off00011c86.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C86 | 10780 bytes |
SHA-256: eeaf90b048bdcbc3dcc0f8742648e6a3bfc8833d6cb6ebc9791744d1a7622aad |
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font_02_sfnt_off00013578.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13578 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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