MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, likely intended to host malicious files. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security. No scripts were extracted, but the presence of multiple external URIs suggests a downloader or phishing attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9984
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://krisoc.ru/uplcv?utm_term=unir+puntos+para+imprimir+gratis
- http://cnmrobotics.com/files/files/xemisew.pdf
- https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/2759b968230718147a42d914c0c5de2f/16749385111.pdf
- http://ricarda-allegra.de/userfiles/file/52600751710.pdf
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607927cdbf07e---66986672588.pdf
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e6ec1e773ee---38672326009.pdf
- http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160832be2836c7---62737299447.pdf
- https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/1609877a4c95e8---85899928662.pdf
- https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d32de43c3f---74275705042.pdf
- https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/vrrkafdc40tn7ab4rmk1abj844/xorif.pdf
- http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a38c54d0deb---18755141549.pdf
- http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/ol2adgc8qa04j8efvephn6jcvd/63336658337.pdf
- http://boek.se/bilder_umeny/File/79536317001.pdf
- http://expertsystemgroup.com/file_media/file_image/file/31783781328.pdf
- http://kolasinprevoz.rs/slike/files/mowevipiromumanijavawos.pdf
- https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/809d5a2ba69ba7dad99ba5271cf9b290/sosarugolelirugisudoxone.pdf
- http://huimao.com/upload/vumarajivubaxatek.pdf
- https://burlingame.com/wysiwygfiles/file/kejedasavujubinaxi.pdf
- http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161101b5679287---96898542721.pdf
- https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/4f24a87b0f896461d75aaa8a4d7c294c/divunoxev.pdf
- https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609143fe123e4---84280726662.pdf
- http://sntaviator.ru/ckfinder/userfiles/files/bijobigopeposagokunoza.pdf
- https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/mmko52l2klg21j6go71gb9h7vq/kejixividejor.pdf
- http://www.verneteco.com/ckfinder/userfiles/files/telumewemaforisurevepox.pdf
- https://distriparkbotlek.nl/userfiles/files/404205952.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_off000104f8.bin6c4b7d44e8d3ba5d3e58142531e9133fbe8e184b05aef18f13a9c5510cbfa999 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104F8 | 18176 bytes |
font_01_sfnt_off00013338.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13338 | 16792 bytes |
font_02_sfnt_off00014b4f.binf66d46355c8d33906464774660ad66b9eac8cfb3f311fcf6438d1d19735bb2d7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14B4F | 10524 bytes |
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