MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains multiple heuristically identified random and disposable URLs, with one specifically flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs and the nature of the heuristics suggest the PDF is designed to lure users to download a second-stage payload, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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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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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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://smartech.lv/sites/smartech/uploads/documents/files/89777718904.pdf In PDF document text
- https://cukimentescukraszda.hu/files/files/gumosopu.pdfIn PDF document text
- https://uangraja.com/contents/files/12173855262.pdfIn PDF document text
- https://ambulatorioveterinariosismondi.eu/file/pamapeb.pdfIn PDF document text
- https://cardolf.ro/files/vudugufixonexulopa.pdfIn PDF document text
- http://zulassungsdienst4you.de/bilder/file/76096604953.pdfIn PDF document text
- http://eternoohydro.com/d/files/jozakonirajomomobokosip.pdfIn PDF document text
- https://copperscraphandlers.com/ckfinder/userfiles/files/xopigovexowiri.pdfIn PDF document text
- http://auxerretv.com/content/public/file/66677295154.pdfIn PDF document text
- http://ukwoodrecycling.com/userfiles/files/10665246831.pdfIn PDF document text
- https://www.la-providence-ehpad.fr/ckfinder/userfiles/files/bowosevebaza.pdfIn PDF document text
- http://scpt.it/userfiles/files/43547517517.pdfIn PDF document text
- http://solarexperten.ch/fckeditor/editor/images/file/12701830986.pdfIn PDF document text
- https://jamisonfurnace.ca/userfiles/files/45757534140.pdfIn PDF document text
- http://ahjygjg.com/upload_fck/file/2021-9-11/20210911075416647953.pdfIn PDF document text
- http://dangkykinhdoanhkiengiang.com/upload/ck/files/46634585160.pdfIn PDF document text
- http://cioccolatogallucci.it/userfiles/file/gilerunifasagowet.pdfIn PDF document text
- http://axwelindia.com/uploads/87752388429.pdfIn PDF document text
- https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613ac742862b0---92825080300.pdfIn PDF document text
- http://oris-am.com/editor_up/92074211710.pdfIn PDF document text
- http://xn----7sbbgprpk7biiq.xn--p1ai/admin/ckfinder/userfiles/files/nefawevagobiwo.pdfIn PDF document text
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132047848886---vuvuvakujojakif.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=virtualbox+android+apkPDF 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_off00010340.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10340 | 18900 bytes |
SHA-256: 6856f3a6045f1bfe1527e477e2af7a0dfc1327bcd8c74cc7934d4c4f3853496f |
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font_01_sfnt_off0001348b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1348B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00014ca2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14CA2 | 10488 bytes |
SHA-256: dd463adbf0569c366ec56fd348f6cfbda178ee094c3ccf062e697f2081340974 |
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