MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file exhibits characteristics of a phishing lure, specifically using a link farm hosted on compromised WordPress sites to direct users to potentially malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document likely instructs users to download a password-protected archive, a common tactic to bypass security filters. The presence of numerous external URLs and the ML classifier's high confidence score further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://chcial.ru/uplcv?utm_term=guia+resuelta+ceneval+exani+ii+gratis
- http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7881513ece---sosekizofinilafaxopixom.pdf
- http://accessprecision.com/userfiles/file/36398894228.pdf
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d792415d5da---xuxajokawutumofuxir.pdf
- http://bi-acaovo.com/upload/files/zelapiporodefotadogerubew.pdf
- http://sns.hu/_user/file/74226346216.pdf
- http://mwcapital.net//ckfinder/userfiles/files/20376898264.pdf
- http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/160d75903cbcde---vuzilosofi.pdf
- https://samsungdvmklima.com/upload/ckfinder/files/betekobug.pdf
- http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160710324c2e76---37512539656.pdf
- https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/79f57d497c1a17c31b5972e62e0d7b20/5609803608.pdf
- https://akproauto.com/nbloom/fckuploads/file/83553989449.pdf
- https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/rvg2b1qnsk7thqrpv8s12lb292/80589585339.pdf
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160c46e5a9d177---153887110.pdf
- http://ros.by/ckfinder/userfiles/files/zugusas.pdf
- http://sangiorgioautoservizi.com/userfiles/files/mawakuniluwijilatovu.pdf
- https://locktactyuma.com/userfiles/file/98481109117.pdf
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ade6197fd95---34672939134.pdf
- http://suurelepa.ee/data/file/26249221230.pdf
- http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160756f7c0b5dd---19380777949.pdf
- http://skrabl.pl/www/rpbd/fck/file/76861720391.pdf
- http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606d23b50dbff---rimoletosekuto.pdf
- https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/usnaft72hg5dmh9ho5nfgo9elf/82017943827.pdf
- http://csc025.com/userfiles/file/20210702154313_j9o8wb.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_off00010b97.bind6dcfc7e4b7461a5ad75298517ad7c57232c1230f6245162fdcd6a06d5198e45 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B97 | 19488 bytes |
font_01_sfnt_off00013d42.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13D42 | 16792 bytes |
font_02_sfnt_off00015559.bin56f1350e7fac1df6ea2e83ddb1d371e44263f7f391bbe2f95ca29c42f5e71664 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15559 | 10592 bytes |
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