MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of embedded URLs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic confirm the document's purpose is to redirect users to potentially harmful sites.
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 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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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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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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://cructi.ru/uplcv?utm_term=word+a+day PDF link annotation
- http://studiotecniconuti.it/userfiles/files/64357913520.pdfIn PDF document text
- http://pietroquatriniarchitetto.eu/userfiles/files/xemivuzamisuzomojojo.pdfIn PDF document text
- http://inter-travel.hu/_user/file/98975781606.pdfIn PDF document text
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136d62f238ef---24469796822.pdfIn PDF document text
- https://spa-salon.ru/ckfinder/userfiles/files/ferijifo.pdfIn PDF document text
- https://butyfarm.mm520.net/userfiles/files/61571825257.pdfIn PDF document text
- http://votava2.altrodesign.eu/ckfinder/userfiles/files/novat.pdfIn PDF document text
- http://gesundheit-im-blog.de/userfiles/file/rogonevifipad.pdfIn PDF document text
- http://grandviewgroupresort.com/upload/files/mibesaxisibofefimonaroxu.pdfIn PDF document text
- http://derkwoo.com/upload/editor/files/zidegosiruxukofumemo.pdfIn PDF document text
- http://kangshi-you.com/uploads/files/202109100612408130.pdfIn PDF document text
- https://cornwallstaffagency.com/userfiles/file/pituwujupisipagenanud.pdfIn PDF document text
- http://okeefesreef.com/ckfinder/userfiles/files/wogewexaxiborusufeb.pdfIn PDF document text
- http://178.62.148.222:300/ckeditor/ckfinder/userfiles/files/33752882697.pdfPDF link annotation
- https://durgabas.coop.np/ckfinder/userfiles/files/19590209665.pdfIn PDF document text
- https://argentinaproduct.com/ckfinder/userfiles/files/dabisosemi.pdfIn PDF document text
- https://intrigantka.ru/images/userfiles/file/58642686231.pdfIn PDF document text
- https://internationallanguagenavigators.com/media/wexivo.pdfIn PDF document text
- http://yishiweb.com/upfiles/files/20210907_120503.pdfIn PDF document text
- http://straps.by/ckfinder/userfiles/files/dajugupagujamuro.pdfIn PDF document text
- https://joinvita.com/neu/userfiles/file/labidiwa.pdfIn PDF document text
- http://vip-cond.ru/userfiles/file/93573505124.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_off0000fbac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBAC | 9708 bytes |
SHA-256: 2d5df233d09c5ce6e61d5458ed02b17e2e14be1f8827be719b4466f921f120c5 |
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font_01_sfnt_off000110e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110E8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000128fa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x128FA | 17228 bytes |
SHA-256: 8dba3fa96db98d018e6295d880166d040b33d1aea37c402903fbfa048869d2fb |
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