MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure, likely attempting to trick users into downloading further malicious content or submitting sensitive information.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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 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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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://oniceh.ru/uplcv?utm_term=campbell+biology+latest+edition+pdf
- http://wamer.org/userfiles/file/xozunevozumekapegudo.pdf
- https://ip-kamera-rendszer.nuttydog.hu/ckfinder/userfiles/files/74761182970.pdf
- http://mama-care.com/UserFiles/file/30349630435.pdf
- https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/b640a2101d3cf1255eaa6abbeb2d304e/vuxuvel.pdf
- http://esenkardeslerinsaat.com/resimlerfiles/71874468943.pdf
- http://krasneclanky.cz/uploads/20692412949.pdf
- http://geometrarontani.it/userfiles/files/manosujerasade.pdf
- https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1612edd81aa8e4---zosiniruferigujagetu.pdf
- http://njbeihang.com/uploadfile/file///2021091209490489.pdf
- https://thehouseproduction.net/file/52361162350.pdf
- https://alamansyria.com/userfiles/file/vokolodopevoxusozemofox.pdf
- http://gsemilia.it/userfiles/files/wuxanilezojibizuzori.pdf
- http://architettoseneca.com/userfiles/files/livolaxapow.pdf
- https://anne-berger.de/sites/anne-berger.de/files/fkcfile/xojuku.pdf
- https://daqing-jewelry.com/uploads/files/202109052210042530.pdf
- http://chretkinia.pl/userfiles/file/86694195298.pdf
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161321d4c24e4b---62930062884.pdf
- https://www.esfa.bg/root/ckfinder/userfiles/files/mibeletokuzilufimemokilan.pdf
- https://www.tratedu.net/ssss2018/assets/143ad273/ckfinder/core/connector/php/upload/userfiles/files/fecd1d000e25b83e9a01ad0149ab6b5f.pdf
- https://sistemagestiondpr.com/userfiles/file/16473586982.pdf
- http://didaconcept.com/admin/fckeditor/file/fuzaxuwalofuwovewaze.pdf
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/161447910a4e2d---18311292221.pdf
- http://balalajka.nu/media/nejakesagepinosovupifum.pdf
- https://taevlingar.se/images/pages/file/48167464075.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cc07.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC07 | 16792 bytes |
font_01_sfnt_off0000e41e.bin29228c39615355ff951616fc98a377fdfa6301558a96f628f190a65e78cb792c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE41E | 11028 bytes |
font_02_sfnt_off0000fd55.binea3535ba18c449423f0bbecf3f36dd16818de88f91ae5a264398828537db80e5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD55 | 17024 bytes |
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