MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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 https://coretry.ru/uplcv?utm_term=free+children%27s+books+in+pdf+format PDF link annotation
- http://educasters.co/ckfinder/userfiles/files/54493404659.pdfIn PDF document text
- https://zlataraburmevuckovic.com/files/13955254355.pdfIn PDF document text
- https://vipbeachhouse.com/uploads/editor/file/76268601768.pdfIn PDF document text
- http://xn--2o2b17g32e8xisqq.com/userData/board/file/74498716407.pdfIn PDF document text
- http://colegiosantarosa.com/uploads/imagem/file/rexuzimaf.pdfIn PDF document text
- http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/03c76e28dfcf37f3b6834f7eba0660ad/76102755393.pdfIn PDF document text
- http://yuanhebiotech.com/upload/files/xanaxigejitenop.pdfIn PDF document text
- http://schokoladenbrunnen.de/idata/gulenigubog.pdfIn PDF document text
- https://empezo.xyz/js/ckfinder/userfiles/files/47453364037.pdfIn PDF document text
- http://newtrichur.com/userfiles/file/xepewu.pdfIn PDF document text
- http://studiorumeo.it/userfiles/files/54254599233.pdfIn PDF document text
- http://hzeiger.com/userfiles/file/vujogiwejonofovi.pdfIn PDF document text
- https://longhoang.vn/upload/files/88725500492.pdfIn PDF document text
- http://club-integra.ru/userfiles/file/repiminogonaduzozowunaja.pdfIn PDF document text
- http://daphongthuyhueminh.com/uploads/image/files/78785959271.pdfIn PDF document text
- http://srtcivilnorth.com/ckeditor_file/files/liwomekagiguwapexuzawoba.pdfIn PDF document text
- https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/16139ab3ba7ff0---rabipirunumixogemavijudet.pdfIn PDF document text
- http://cheers-gifts.com/userfiles/vubidadovoteb.pdfIn PDF document text
- http://libron.pl/fckupload/assets/file/54001302461.pdfIn PDF document text
- https://burgaseguros.com/userfiles/file/nozodidateganudunofa.pdfIn PDF document text
- http://tecs4.com/intranet/ckfinder/userfiles/files/69696320656.pdfIn PDF document text
- http://carraracucinecomponibilitrapani.it/userfiles/files/jokuzowuzizobozipetomug.pdfIn PDF document text
- http://valosagoskincsesbanya.com/upload/file/63242196287.pdfIn PDF document text
- https://ecoquimica.cl/dinamicos/uploads/file/larerigotax.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_off0000de92.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE92 | 11128 bytes |
SHA-256: 108b36adbaa883c7d3e0491c50084eb5de08053ee5795fde2735a964ebf15a72 |
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font_01_sfnt_off0000f815.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF815 | 16984 bytes |
SHA-256: 4ecbf8ea186aad5679d9a8da1b2f5221dd7f80a9dd2bed65e1469f0c6ddee857 |
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font_02_sfnt_off000123ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123EC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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