MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous embedded URLs that point to compromised WordPress sites, indicating it functions as a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The presence of multiple distinct hosts and the use of 'utm_term' parameters suggest an attempt to obscure the ultimate destination and potentially leverage SEO for distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 6
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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 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=general+principles+of+taxation+in+the+philippines+pdf PDF link annotation
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a1f643d42---benoboxexororimibexawit.pdfIn PDF document text
- http://nakajima-ya.com/upload/save_image/files/82367645179.pdfIn PDF document text
- http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3b7dc4db96---21905386934.pdfIn PDF document text
- http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160734ff8b8910---xikumujavedowefolosux.pdfIn PDF document text
- http://budohurtsa.pl/userfiles/file/94346539423.pdfIn PDF document text
- https://proektasis.gr/admin/spaw2/uploads/files/takonumozup.pdfIn PDF document text
- https://thokhoavietnam.com/upload/files/guwokuxadavovusik.pdfIn PDF document text
- http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/160befb8983e2a---60068621668.pdfIn PDF document text
- https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160833e1675a99---tifezagewajajig.pdfIn PDF document text
- http://rdmsrl.it/userfiles/files/batinomeraputuse.pdfIn PDF document text
- http://naturestuff.nl/siteimages/file/62929707889.pdfIn PDF document text
- https://postele-z-masivu.sk/ckfinder/userfiles/files/26133676723.pdfIn PDF document text
- http://heorungminhphat.com/luutru/files/97061679263.pdfIn PDF document text
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071154447fcf---84303409507.pdfIn PDF document text
- https://batdongsandothanh.vn/luutru/files/71496285479.pdfIn PDF document text
- https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/7pl6ou645mpp3shcsfh5kk56rc/lijetinugupo.pdfIn PDF document text
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16081d3234a96c---12907553024.pdfIn PDF document text
- http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610eddac6524c---wepikogutefimudavuzanede.pdfIn PDF document text
- http://bobmeetin.com/media/galleries/files/78628569368.pdfIn PDF document text
- http://softwarefactory.nl/images/file/13347753461.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e566.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE566 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fd7d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD7D | 10860 bytes |
SHA-256: a53b4fbc2efbed7671608c53e166d61f5d972dd16d056b3386acb1ffddd50ec0 |
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font_02_sfnt_off00011683.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11683 | 17944 bytes |
SHA-256: ea685e86215ba4a8faaa62e263e014f5a061732f1aa9a3ed0d33bab4da8aa469 |
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