MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URLs, many of which point to compromised CMS uploads or are part of a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing sites or download further malware. The embedded JavaScript is a common technique for initiating malicious actions within PDFs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://irlanc.ru/uplcv?utm_term=words+beginning+with+p PDF link annotation
- http://www.travelwithtaangoo.com/img/file/13018245074.pdfIn PDF document text
- http://niezapominajkowo.eu/userfiles/file/biduvabewivuromopakevusit.pdfIn PDF document text
- https://newshieldinsurance.com/demo/gsa/final/images/file/73174798437.pdfIn PDF document text
- https://megatekspb.ru/sites/default/files/uploads/34719196963.pdfIn PDF document text
- http://tonyprins.nl/images/uploads/file/67359979268.pdfIn PDF document text
- https://congchungnguyenlieu.vnpec.xyz/uploads/files/dusufasasipize.pdfIn PDF document text
- http://due.pt/js/ckfinder/userfiles/files/81114594120.pdfIn PDF document text
- https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fda47bfaf5---8117238901.pdfIn PDF document text
- http://gpshardorawal.com/hemkunt/userfiles/file/37943312011.pdfIn PDF document text
- http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613950df5b770---13443390970.pdfIn PDF document text
- http://qtjdb.com/UploadFile/2021/09/08/file/20210908_084626_152.pdfIn PDF document text
- https://eletmodguru.hu/files/files/7470146499.pdfIn PDF document text
- https://luxesystem.site/js/ckfinder/userfiles/files/27211377421.pdfIn PDF document text
- https://nordiskvillaventilation.dk/userfiles/file/5416947248.pdfIn PDF document text
- http://maryalo.com/userData/board/file/53892525617.pdfIn PDF document text
- https://www.tahitotfalu.hu/ckfinder/userfiles/files/kisesil.pdfIn PDF document text
- http://iknow.pl/files/file/99600633532.pdfIn PDF document text
- https://baobiachau.com/luutru/files/wateratuxopizufogupedip.pdfIn PDF document text
- https://lnpro.in/ckfinder/userfiles/files/sinomejibewu.pdfIn PDF document text
- https://redengewinnt.com/userfiles/file/zonugibabilesoduj.pdfIn PDF document text
- http://kameleonhastanc.hu/files/file/mevufetobalodux.pdfIn PDF document text
- http://sictombbi.fr/ckfinder/userfiles/files/sebedowulobawabeduborebiz.pdfIn PDF document text
- http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/e8cbf108fd9a309102a074e6d22fddc8/47281332416.pdfIn PDF document text
- 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_off0000be76.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE76 | 10684 bytes |
SHA-256: 3cf571e58c425e2dd73924a720ea7e27cf3b8f13e64161f37307f2e601a2048c |
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font_01_sfnt_off0000d683.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD683 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ee95.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE95 | 16208 bytes |
SHA-256: 2d0bcfe66dfa86d43de473782d51f41d5de65aa2610b595655092b181b6663b9 |
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