MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised or disposable hosting. The heuristic 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicate a malicious intent to redirect users to potentially harmful content. The ML classifier and ClamAV detection further support the malicious classification.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
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 farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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 https://www.sherpachristain.org.np/ckfinder/userfiles/files/75581478869.pdf In PDF document text
- http://gs-metals.com/filespath/files/20210903215130.pdfIn PDF document text
- http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132516875f05---xosomamorebi.pdfIn PDF document text
- http://aire-limpio.com/img/editor/file/domoreritom.pdfIn PDF document text
- http://foto-preiss.at/upload_files/files/47205458883.pdfIn PDF document text
- http://cga82.com/admin/File/49344541978.pdfIn PDF document text
- http://rdmsrl.it/userfiles/files/92706606510.pdfIn PDF document text
- http://www.solarwindependence.com/ckfinder/userfiles/files/64476946783.pdfIn PDF document text
- http://beccaro.it/userfiles/files/kalizifumup.pdfIn PDF document text
- http://lso-msm.com/userfiles/file/93471847765.pdfIn PDF document text
- https://www.southdownscellars.co.uk/ckfinder/userfiles/files/titagenobubipisibewogi.pdfIn PDF document text
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136399d3871f---17435265840.pdfIn PDF document text
- https://regiefranchet.fr/userfiles/files/9577667133.pdfIn PDF document text
- https://www.icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/guwerixin.pdfIn PDF document text
- http://www.cerathai.com/image/upload/File/fumegib.pdfIn PDF document text
- http://soyana.de/js/ckfinder/userfiles/files/13364610297.pdfIn PDF document text
- http://8njl.com/userfiles/files/vutedexuranesima.pdfIn PDF document text
- https://agrocare.ro/ckfinder/userfiles/files/jopumebagukixijoxuj.pdfIn PDF document text
- http://eortak.com/img/fck_temp/file/vadupusu.pdfIn PDF document text
- http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/e6fb49b1f6a59e138faaee989728d8ff/10146937287.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=free+rogue+company+codes+ps4PDF 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_off0000bacc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBACC | 16940 bytes |
SHA-256: 4fc5d85b41c3a2623f3d6fa9d05c1d34290e6aaf8b9545012aa7f2a98c4a57ef |
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font_01_sfnt_off0000e6c2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6C2 | 10888 bytes |
SHA-256: f8c195f1ed2a47c2ece566be616aba52c20e622ed172d69d6504aba06f44adc0 |
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font_02_sfnt_off0000ffca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFCA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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