MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or malware delivery attempt. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users. The PDF structure itself does not contain readable content, but the heuristics strongly indicate a malicious intent to leverage external resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9937
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 http://stalmont.eu/userfiles/file/jimugewobefo.pdf
- http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b3bb923ab78---tazavobunel.pdf
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/d489951403065625920076f5e64a27c3/24198649189.pdf
- https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/bcefef061be633782f2c64ddf5244833/27857869716.pdf
- http://batiment-tunisie.com/userfiles/file/15206902683.pdf
- https://brianhigbielaw.com/UserFiles/file/tadefopigo.pdf
- http://aroma-es.site/yamituki-n/uploads/files/negirulid.pdf
- http://meijialx.com/ckfinder/userfiles/files/masejuwekazivuziwof.pdf
- https://schmitz.cz/res/file/manivozakogugugufeliguru.pdf
- http://berbun.com/user_img/file/panezed.pdf
- https://childconcern.in/trila/userfiles/file/fowiretemazex.pdf
- https://mymango.ru/wp-content/plugins/super-forms/uploads/php/files/834f9fb0e95fab2060a8d5023b05ebdf/24214198738.pdf
- http://vivatbacchus.hu/files/file/35084834297.pdf
- https://salvamontbihor.ro/app/webroot/files/userfiles/files/pugifomomoputesivesa.pdf
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086ba5506c82---2591714513.pdf
- https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/5e71c76b7eed9dab47ffb47c4136d226/mobematewozavu.pdf
- http://ccswcd.com/userfiles/file/59781411506.pdf
- http://xboxheerlen.nl/userfiles/file/96135818268.pdf
- https://cvconstructionsgoa.com/pharma/admin/userfiles/file/kumaba.pdf
- https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160a442c3f22d8---devemevoxinejaduvajepu.pdf
- https://isleo.com/i_photos/file/32288658716.pdf
- https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/niotl48t7i42gqeq93luohe4no/feremasaful.pdf
- http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/ramu0itfrl23dbreo0ufbm0ar5/jojisuru.pdf
- http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160818d45eb46f---52969683934.pdf
- https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/hd1r607h0f66j10gds2h76t8g4/26395348164.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=convergence+of+a+sequence+calculator
- 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_off00010384.bine3231ee34bf0c6227ef2ac0124e4fe201f0b84171de5f5f92cbd71e965c69577 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10384 | 10760 bytes |
font_01_sfnt_off00011c3a.bin2e6a868bf8226073fdca2c82a145aa78b0d0ba64070efbf2208cebba9b22a475 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C3A | 18752 bytes |
font_02_sfnt_off00014d54.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14D54 | 16792 bytes |
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