MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm with numerous URLs pointing to potentially compromised websites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The heuristic 'SE_CALLBACK_LURE' further supports a phishing pretext, likely aiming to trick users into interacting with malicious links or content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/df89t98j0dhibhmolsqfk9dv3g/37540055098.pdf
- http://hamkr.com/userData/board/file/gabaxozaliko.pdf
- http://yibetter.com/data/files/gapitopepafam.pdf
- http://www.pzkexie.com/up_files/file/lanimupevidowujipenides.pdf
- http://www.wm-meyer.de/meyer/admin/editor/ckfinder/userfiles/files/35984374697.pdf
- http://portaldeaquidauana.com.br/ckfinder/userfiles/files/2092446734.pdf
- http://studiorapizza.it/userfiles/files/xasitabejob.pdf
- http://bancasemecanino.com/userfiles/files/rapizadowofonemidow.pdf
- https://harmony.im/userfiles/file/3892356501.pdf
- https://samajsutra.com/userfiles/files/87189634409.pdf
- https://geniodelweb.com/file/54047881213.pdf
- http://thessalonikiflights.com/files/files/60241337934.pdf
- https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/16130966804bff---zabawip.pdf
- http://mecateengenharia.com.br/ckfinder/userfiles/files/85028797725.pdf
- http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/214113a703ed88e78ab20128064b2c77/tefiniw.pdf
- http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136f3a486ae2---nilis.pdf
- http://citadelcaralarms.com/userfiles/file/10777699501.pdf
- http://kppzp.pl/userfiles/file/59003696670.pdf
- http://chuabenhxuongkhop24h.com/images/files/kasusekojezipunagunutuw.pdf
- http://seidels-mineralienwelt.de/images/uploaded/file/pobiwukelined.pdf
- https://groupburuemas1.com/contents/files/jiwezo.pdf
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/0f2c2d0ba3f382da29191d839eba1b5a/49665417368.pdf
- http://tamphuhiep.com/Images_upload/files/xekatewomenodukijewurezu.pdf
- https://numen-wow.com/userfiles/cloud/files/xasizew.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=words+that+start+with+short+o
- 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_off0000b76d.binafb49d15021d81432bcf443534d87f3b12d025d4c0bb6aba618ed3acd8e9af66 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB76D | 15360 bytes |
font_01_sfnt_off0000de71.binfe98f853f069f40a7a073d461c320341cef7f61346070ad74d83460daa284b15 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE71 | 10144 bytes |
font_02_sfnt_off0000f54f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF54F | 16792 bytes |
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