MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many of which host further PDF files. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for a large number of links, suggesting a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://es21sys.com/userfiles/file/86132532454.pdf In PDF document text
- https://atlaskvartir.ua/data/uploads/files/nabafirexozabivabagadu.pdfIn PDF document text
- http://faisaltowel.com/survey/userfiles/files/zatavaworipololeniziwab.pdfIn PDF document text
- http://ambulatorioveterinariobubiniregini.eu/userfiles/files/47028251522.pdfIn PDF document text
- http://taxfreepoint.com/file/95456920511.pdfIn PDF document text
- https://sanghvicranes.com/staging/media/bonukesununasoda.pdfIn PDF document text
- https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/kiqbivbtvritebkv3kbvcmncqd/kigulof.pdfIn PDF document text
- https://biorenta.lt/ckfinder/userfiles/files/tumikakaseposeki.pdfIn PDF document text
- http://webs123.com/userfiles/file/zefilumubelexeverozu.pdfIn PDF document text
- http://bernardthevenet.fr/ckfinder/userfiles/files/bezogel.pdfIn PDF document text
- https://laatuwhuisweerstralen.nl/upload/file/fitaximuve.pdfIn PDF document text
- http://185.33.116.145/~acus01/upload/files/penujipafivafolov.pdfPDF link annotation
- https://ocw.tw/uploads/files/risulomixuwedanegumesigox.pdfIn PDF document text
- http://unicaconsultoriarh.com/images/files/83737833849.pdfIn PDF document text
- http://cuspsurgeons.com/userfiles/file/lidodotebunatup.pdfIn PDF document text
- https://aymfly.com/aym_image/files/sikoruguperobe.pdfIn PDF document text
- http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/161445eb5223c6---tozapuribef.pdfIn PDF document text
- https://clubsecurite.fr/webroot/upload/files/rizijuzevojasinogumuru.pdfIn PDF document text
- http://alde-pace.org/ckfinder/userfiles/files/wowazulasusorer.pdfIn PDF document text
- http://xn--brneneskontor-landsforening-b0c.dk/userfiles/file/renilib.pdfIn PDF document text
- https://torgradio.ru/new/files/file/95318435597.pdfIn PDF document text
- https://transmar.biz/ckfinder/userfiles/files/nusowukexukamujomagasova.pdfIn PDF document text
- http://korea-labels.com/ckfinder/userfiles/files/96435297067.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=best+site+to+download+walking+deadPDF 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_off0000dbc0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBC0 | 10552 bytes |
SHA-256: ad03fa421e538ffb38f590a70eff7b2591a02708c5ed75fdade73e69a9e18ae0 |
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font_01_sfnt_off0000f3d2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3D2 | 18104 bytes |
SHA-256: 15b676adc63e730e87a69acf99b3dc5118e3dcd40ef5f694ba249fb92572c509 |
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font_02_sfnt_off0001236d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1236D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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