MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document identified as malicious by ML classifiers and ClamAV. It contains a large number of embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of these links indicates an attempt to facilitate phishing or malware distribution, likely initiated via a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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 https://wastran.ru/uplcv?utm_term=constantly+have+to+pee
- https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/f59589704b3caed078bb44fb7fa4ef36/vegelejupo.pdf
- http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/160872e2f33ebe---bapukuguzowo.pdf
- http://humanitool.ru/userfiles/file/kuduravo.pdf
- http://drive4smilesontario.com/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/1898843507.pdf
- http://jfac.kr/ckfinder/userfiles/files/bisaladigipulawubow.pdf
- http://dush-kz.ru/uploads/fck/file/51248850171.pdf
- http://amirafouad.com/uploaded_files/file/27701345312.pdf
- https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160887904a3f2a---viwurapor.pdf
- https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/5ee63a2cb8ffbeb443e6f0254aa081a0/39182989941.pdf
- http://autavrabek.cz/obrazky/file/68303468537.pdf
- http://sklepjola.pl/userfiles/file/98753829012.pdf
- http://ideas4mypool.com/userfiles/file/37609937286.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607161a9ecc8f---28378641030.pdf
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074303c906e6---57235291155.pdf
- http://spearsyounglegacy.com/clients/b/b2/b2c23f164518415ec8f3c1c8d0af542d/File/powapodobunitubure.pdf
- https://aymfly.com/aym_image/files/39243530717.pdf
- https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160893a204fefd---25029807069.pdf
- http://botosani.ro/img/uploads/file/wonadexevoli.pdf
- https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/83ecd3567f9101823962ec906e2cefce/21181507861.pdf
- http://getampedmag.com/ckfinder/userfiles/files/mezilofidakijutir.pdf
- https://rkdestate.com/userfiles/file/badupulerodox.pdf
- https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/d3ebbe05f97e987980810fcce47b8fa0/lisoperakarufox.pdf
- https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c5e4c8c13a8---gatidudusowupapulubekafa.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_off0000f0df.bin7ff40f948465076fdce43f4c08e6e864703657933970579f3a185e3ad72fb04e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0DF | 10368 bytes |
font_01_sfnt_off00010860.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10860 | 16792 bytes |
font_02_sfnt_off00012072.bin93198b42532c5427da87b0156b2f494b4dab90b5c6ef07f24d107557989f9c39 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12072 | 16408 bytes |
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