MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as malicious, including a PDF link farm pointing to compromised WordPress upload storage. The ML classifier also assigned a high probability of maliciousness. The embedded URLs suggest an attempt to redirect the user to download further malicious content, likely a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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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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 http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077e32631d76---dodolitojemekudu.pdf
- http://ms-beauty.com/ckfinder/userfiles/files/mavalabagasalezuzon.pdf
- http://dientrotiendathc.com/media/ftp/file/82021162537.pdf
- https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16098bec309aba---baxiteveduwujukadarif.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609c466c2ac9e---96057350944.pdf
- https://gerastar.com/userfiles/file/ketobi.pdf
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/ufvucq9ar1psdhkhun2frtrcj1/62567381194.pdf
- http://slsnn.ru/content/file/74883120411.pdf
- https://ibliberia.com/ckfinder/userfiles/files/97288055468.pdf
- https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/16087a9e7755df---21181463891.pdf
- https://uppersanduskyrotary.com/cms/files/File/gafepafutokofumi.pdf
- http://nowyhotelik.pl/userfiles/file/dakamivikapesi.pdf
- https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c66b48a0cc---68286626686.pdf
- http://breakevenpoint.pl/uploads/editor/file/mejometudusaxobur.pdf
- https://heatingboiler.ca/fck_upload/file/54825868734.pdf
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160944c0f4016e---56613152282.pdf
- http://totaldeliverancecathedralchurch.com/clients/2/22/22dae496a1749ae881e6bee195142b05/File/86855142770.pdf
- https://doellefjelde-mussemarked.dk/images/newsmail/file/zaxeli.pdf
- http://pierrevillers.fr/mairie_files/file/5836943854.pdf
- https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/e118604f1e528ffdf8b02e5cdc844f4b/gefevuduxubekigefekube.pdf
- http://sklepjola.pl/userfiles/file/56052547658.pdf
- http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/160806243d0ee9---85292762921.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=1985+mustang+gt+for+sale
- 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_off0000f726.bin5f9bf92948376d1812db3fe88c416127305b354769f87c1801203ae888ebe0ee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF726 | 17104 bytes |
font_01_sfnt_off000123e4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123E4 | 16792 bytes |
font_02_sfnt_off00013bfb.bin2c0e7d6c25267d27eda8e69622076a3a7193ddccb50bb24ca1505caa52473c36 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13BFB | 11032 bytes |
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