MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which are part of a link farm hosted on disposable or compromised domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The embedded JavaScript is a common technique for executing malicious code or redirecting users.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://pistant.ru/uplcv?utm_term=lugarno+post+office PDF link annotation
- http://rhondachem.com/d/files/38198249665.pdfIn PDF document text
- https://rajaunited.com/contents/files/57841803601.pdfIn PDF document text
- http://hongshengfish.com/uploadfiles/2021090711060123709.pdfIn PDF document text
- https://aluminiosarla.com/userfiles_arla/files/dodobukekirukilejazivupu.pdfIn PDF document text
- https://pnvvr.ro/userfiles/file/metosunevon.pdfIn PDF document text
- http://bong-dem-long.org/upload/editor/files/95324174392.pdfIn PDF document text
- http://hanabi-la.com/uploads/files/26757617070.pdfIn PDF document text
- https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/6c877489e5caa724a360bfe9fa369dae/76942810368.pdfIn PDF document text
- http://ataru.site/js/ckfinder/userfiles/files/17965130165.pdfIn PDF document text
- http://sirinthepgroup.com/userfiles/file/nebosedupi.pdfIn PDF document text
- https://kaisar168.com/contents/files/63615817937.pdfIn PDF document text
- https://hirurgija.me/files/20390313626.pdfIn PDF document text
- http://acmemask.com/upfiles/editor/files/12345049189.pdfIn PDF document text
- http://thebookmarkcafe.com/uploads/files/xoperuvunupu.pdfIn PDF document text
- http://rsst77.ru/upload/files/35983012222.pdfIn PDF document text
- https://livnica-metalurg.com/images/pages/file/82295214910.pdfIn PDF document text
- http://cheapneasytrafficschool.com/CheapNEasyTrafficSchool/pa/trainstation/uploads/image/file/vanaguvebivejisugav.pdfIn PDF document text
- https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b78e5373d1---33407842981.pdfIn PDF document text
- https://susta.vn/userfiles/file/2924204360.pdfIn PDF document text
- https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/161400a64a28e4---95834085521.pdfIn PDF document text
- http://pathtojanna.com/userfiles/files/xejisagegod.pdfIn PDF document text
- http://wumag.pl/userfiles/file/mapozomu.pdfIn PDF document text
- http://messtores.ca/fck_user_files/file/zotiganokusuzukun.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_off0000f6d4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6D4 | 17688 bytes |
SHA-256: a4b446b28d8b0ddcd3ba773e46e8a1bf82ec09c36b52a859b7405ef24d88f847 |
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font_01_sfnt_off0001246b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1246B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013c82.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C82 | 10668 bytes |
SHA-256: 49c6712ad0db040c83d3cecaab047e829fb21a1f3ce54042874d975a75333871 |
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