MALICIOUS
134
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. The PDF also features a large number of external links, many of which are on disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
Heuristics 6
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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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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://synerhu.ru/uplcv?utm_term=the+substituent+groups+that+are+commonly+associated+with+benzene+ring+are PDF link annotation
- https://losaltos.com/wysiwygfiles/file/20477343998.pdfIn PDF document text
- https://emons-verlag.com/testarea/cwsCMSlight/media/files/vofazogapes.pdfIn PDF document text
- http://rayhovietnam.vn/upload/files/lenalovuzozowiso.pdfIn PDF document text
- http://strandedtattoo.net/file/29174608634.pdfIn PDF document text
- http://mya1fc.com/files/ckuploads/files/kozidiseriluluwepu.pdfIn PDF document text
- https://fresh-cherries.com/ckfinder/userfiles/files/zidovubesokikibafajifi.pdfIn PDF document text
- https://uleiuri.ro/userfiles/file/lenisozoso.pdfIn PDF document text
- http://balie.overeembv-profielen.nl/upload/files/gusuvopipuzibawimewe.pdfIn PDF document text
- https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/16150f536a5134---fujurunuvefitu.pdfIn PDF document text
- http://telektrans.hu/editor_up/nuzifeligiwibekanonazijem.pdfIn PDF document text
- http://redeyeldn.com/userfiles/file/mitosibelen.pdfIn PDF document text
- http://ibarugi.com/fckeditor/userfiles/file/fozux.pdfIn PDF document text
- https://kolbandibileklik.com/resimler/files/11717658509.pdfIn PDF document text
- http://vetportonaccio.it/userfiles/files/fujipalesemafofe.pdfIn PDF document text
- http://togclick.com/media/userFckfiles/file/59039393749.pdfIn PDF document text
- http://kbcsisa.com/upload/fckeditor/file/73567224107.pdfIn PDF document text
- http://naturalfurnish.com/userfiles/file/bizagabogubise.pdfIn PDF document text
- http://mindentudor.hu/userfiles/file/55855923933.pdfIn PDF document text
- http://kzlo.pl/fotki/fotki/file/91824142483.pdfIn PDF document text
- http://lollanaclinic.com/image/upload/File/9740269875.pdfIn PDF document text
- https://marwaautorepair.com/nbloom/fckuploads/file/kazidokadizugapuzuvufager.pdfIn PDF document text
- https://lean-ds.com/upload/editor/file/zujumu.pdfIn PDF document text
- http://cetis156.neutronds.com/assets/js/ckfinder/userfiles/files/zorubodimoxademu.pdfIn PDF document text
- http://salman-is.com/userfiles/file/zafuwomapebilebiselixun.pdfIn PDF document text
- https://benmoonpharma.com/userfiles/file/zojuxisa.pdfIn PDF document text
- http://rklatex.com/userfiles/file/pogawisapexumajeberoxud.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_off0000b8b8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB8B8 | 11424 bytes |
SHA-256: 939694d74a47d8937797ba803fd41614fc8974689c4ee19495e1fd607b7e9701 |
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font_01_sfnt_off0000d32e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD32E | 15856 bytes |
SHA-256: 3348f08ddab2c92ba37052db6e856b3746abacf780e1d4af7c7f221e077a9544 |
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font_02_sfnt_off0000fbc6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBC6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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