MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure strongly indicate an attempt to facilitate phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9898
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://archism.ru/uplcv?utm_term=second+order+linear+equation+calculator
- http://sunjewelsonline.com/userfiles/file/69377299854.pdf
- https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f7d209ab51---96552974056.pdf
- http://autoscuolauniversale.it/userfiles/files/baratemitege.pdf
- http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bf77806873c---66966218015.pdf
- https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/51dd0ad649dc1d1b15d2a38a94e38bed/72888976558.pdf
- http://cartonwrappingmachine.com/userfiles/file/9525071980.pdf
- http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608b70497225f---9057032733.pdf
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c603c84145---xawezibaxumewodesesij.pdf
- https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/46rpt942pq12ujuk5ac720cud3/61932949276.pdf
- http://alwaditrading.com/userfiles/files/89286707873.pdf
- https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/qkk5s9dj0eqpre31np1j4bsrk1/fanebedisativadap.pdf
- http://www.ecostroyservis.ru/File/wabariwibesavexajotoj.pdf
- http://www.cafeinca.com/img/public/contenido/file/fosuvopin.pdf
- http://contextuae.com/resimler/files/23687756616.pdf
- http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609ccd029b35e---jojubomutaxizero.pdf
- http://inwallendorf.de/userfiles/file/38220165315.pdf
- http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f2234bbad3---24300144011.pdf
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086224548e55---vugedebazizobasirogaluva.pdf
- https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/18a4984c2bb56bc179bd9e2dba78289c/makobobexogasu.pdf
- http://monktonlionsclubkidscamp.com/clients/9/99/99b8b5517e5fb663501b7ee5137ebf55/File/6585442120.pdf
- https://www.bistro-e.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073ecd227cc6---65129253211.pdf
- http://ausafe.net/images/art/files/luvumet.pdf
- https://habibitours.com/ckfinder/userfiles/files/3794410405.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010826.bin325c5f5cda05429ae92d15c23118ca1b8712e485108c584e1e30b0ff615913b7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10826 | 16084 bytes |
font_01_sfnt_off00011d53.binf7d27dd93e8c11430f7a1004f6893fab06d16c883176202ec4755a56710c018e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D53 | 10516 bytes |
font_02_sfnt_off00013523.bin4525bc62f582f488e95922d7ebba8493e004bd0b2fde9e397e7787fcd8477c8b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13523 | 18264 bytes |
font_03_sfnt_off000165e3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x165E3 | 16792 bytes |
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