MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code or redirecting users. The presence of multiple external URIs, including a link farm hosted on potentially compromised WordPress sites, indicates an attempt to direct users to malicious or phishing content. The ML classifier and ClamAV detection strongly support a malicious classification.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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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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 http://woykoff.hu/upload/file/85083304053.pdf In PDF document text
- http://patroha.hu/file/63847671244.pdfIn PDF document text
- http://altadirezione-consulting.it/userfiles/files/nexaxirolusalexuvisaro.pdfIn PDF document text
- http://amidoux-peintures.com/ckfinder/userfiles/files/tuwiwiribolipidakod.pdfIn PDF document text
- http://iseveranscopy.com/upload/editor/file/25660605781.pdfIn PDF document text
- http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/16133474692904---12098548523.pdfIn PDF document text
- https://ptogel2.com/contents/files/69742183326.pdfIn PDF document text
- https://siliconautomation.com/userfiles/file/kebexob.pdfIn PDF document text
- https://atputasbazes.lv/images/userfiles/files/nezewilekemimuvijuzibutu.pdfIn PDF document text
- https://manuscripthandler.com/userfiles/file/36027996366.pdfIn PDF document text
- http://teen.plovdivweek.com/js/ckfinder/userfiles/files/wefodusizikidufexisusazi.pdfIn PDF document text
- http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615f6f3996ac7---14905095245.pdfIn PDF document text
- http://sendedianqi.com/upload_fck/file/2021-9-9/20210909033650155297.pdfIn PDF document text
- http://nguoigiupviec99.com/webroot/img/files/zuluvubevenegonirox.pdfIn PDF document text
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16154010bdc068---pafekibuvufajijaja.pdfIn PDF document text
- https://bankkartya.hu/js/ckfinder/userfiles/files/kefurixapozijakitipu.pdfIn PDF document text
- http://cuoredicane.it/userfiles/files/93040962138.pdfIn PDF document text
- http://alrehabourhome.com/userfiles/files/94502362599.pdfIn PDF document text
- https://aydin-elektrik.com/resimler/files/89584518407.pdfIn PDF document text
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d60726b9ae---wijusowazutidepi.pdfIn PDF document text
- https://santehsevast.ru/userfiles/files/38955462703.pdfIn PDF document text
- https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/08ac95a4ad9d68da6f03ba20438c657b/78227273863.pdfIn PDF document text
- https://managed.jlcomputers.com/home/davesmooIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=constitutional+principles+worksheet+answersPDF 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_off0000d9fb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD9FB | 18180 bytes |
SHA-256: f05da6cce00d2561cd111bb2b559798498851cfa31bdc5c5dc6efeef4ccf60d0 |
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font_01_sfnt_off00010918.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10918 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001212f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1212F | 10780 bytes |
SHA-256: a77073678923b50ee759562ec0196aff9abc46c9a68392e586a21faccee7d534 |
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