MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a high number of embedded URLs pointing to various domains, many of which appear to be compromised WordPress sites. The 'PDF_RANDOM_URL_LINK' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics indicate a pattern of distributing malicious links. ClamAV detection and ML classification further support its malicious nature, likely serving as a phishing lure or a distribution point for further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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 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 https://ketchas.ru/uplcv?utm_term=valkyrie+owners+manual
- http://asiavent.com/UserFiles/file///6427498721.pdf
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/7cb7mrspqst1gf30onsaooi4u3/daxukebam.pdf
- https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/9k77getlug3ji8aqjbecsfqgq7/88566814353.pdf
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606f48b06b0a8---guzegezefiwulavugovoduga.pdf
- https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/9ed24f2cddc280d2ea9eff48f838eb19/66065852885.pdf
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090985f898af---sefakinolalerisuvivov.pdf
- https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/60i5isccga2pvng0drsp9iq52m/sejebelojufum.pdf
- https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5879ef0e07---30608723041.pdf
- http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac5ea12240---27750336464.pdf
- https://cecprint.com/images/file/xepejuvun.pdf
- https://caribemed.com/userfiles/file/48225698928.pdf
- http://josephlillianmorrisfamily.com/clients/59960/File/supawiwo.pdf
- http://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b338e441edd---zarevujetatujejoweda.pdf
- http://rapabzenec.cz/obrazky/files/legepirikegarojoxor.pdf
- http://gz-theoutfit.com/UploadFiles/FCKeditor/20210619030441.pdf
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/65579fd7166cd9f20c03c0de6cde0c64/rinuwela.pdf
- https://skyzoan.com/cake/beta/userfiles/file/wibetodaximokibezas.pdf
- https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/2f8feb69d221648606523780d55d9f86/43224061057.pdf
- https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/e1f05a5a236be79dc22479ad85851856/vusezajasawifiwuloxa.pdf
- https://mamadona.ru/ckfinder/userfiles/files/tatiwobiwusulesejeduf.pdf
- https://mn-lawfirm.com/box/userfiles/file/jomifinukefidu.pdf
- https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/79c74b95ea6c9e27e788280b425c608d/30518023964.pdf
- http://geoplan.su/userfiles/file/gepivobilujutavitu.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_off0000cb81.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB81 | 16792 bytes |
font_01_sfnt_off0000e393.binfa0014da709eac4251015d30be3caa6286f47158fc5422a6394e9eac4e93899b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE393 | 16632 bytes |
font_02_sfnt_off00010eb6.bin5db6b375bdc5e100be6952d3964923e6e5f33a16f8e62c36827b5f4a6efdaf40 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10EB6 | 10532 bytes |
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