MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and links to compromised WordPress upload storage, suggesting it functions as a link farm to distribute further malicious content or phish users. The presence of multiple PDF link farm heuristics reinforces this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9940
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://krisoc.ru/uplcv?utm_term=smash+flash+games PDF link annotation
- http://restokrat.info/userfiles/file/xexamerevo.pdfIn PDF document text
- https://web-dev.ethioapp.com/websites/lightyearsahead/code/userfiles/files/21901191867.pdfIn PDF document text
- http://vizit-k.net/uploads/editor/files/bataja.pdfIn PDF document text
- https://charming-dc.com/uploads/files/202108311725568401.pdfIn PDF document text
- http://anquocrealty.com/uploads/image/files/denawete.pdfIn PDF document text
- http://mirsistem.com/depo/sayfaresim/file/18341496237.pdfIn PDF document text
- https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/69a62981a14377a7007135862f509a29/motupezine.pdfIn PDF document text
- http://ontozescentrum.hu/tmp/1578074191.pdfIn PDF document text
- http://elesi.eu/fichiers/files/ginop.pdfIn PDF document text
- https://apteka-wratislavia.pl/halatecza/userfiles/file/jofarakobezekiguvuj.pdfIn PDF document text
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/16148ad4c0eda5---52119602078.pdfIn PDF document text
- http://xn--aknmedical-yub.com/uploads/file/ladakiv.pdfIn PDF document text
- http://wtmongolia.com/materials/file/tumowapokulipojivek.pdfIn PDF document text
- http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16145ce7629bac---62136835151.pdfIn PDF document text
- http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/161472af7aacd0---burowovafimo.pdfIn PDF document text
- https://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/tonitirepemobifuji.pdfIn PDF document text
- http://hferrynetworks.com/FileData/ckfinder/files/20210915_903B8B1C517C9CEE.pdfIn PDF document text
- https://ddshower.com/ckfinder/userfiles/files/29717585411.pdfIn PDF document text
- http://saveursetsavoirs.fr/image/file/83155840701.pdfIn PDF document text
- https://gamepinleri.net/calisma2/files/uploads/namifo.pdfIn PDF document text
- http://synfarm.com/upload/files/84964250315.pdfIn PDF document text
- http://newkontakt.ru/userfiles/images/file/povamozoximidimiserivir.pdfIn PDF document text
- http://hotelgiottotorino.com/userfiles/files/kuxagul.pdfIn PDF document text
- https://clubelsendero.com/img_pag/file/satilexofifokosipika.pdfIn PDF document text
- http://nocleginaplus.pl/uploads/userfiles/files/6368934657.pdfIn PDF document text
- https://citronel.com/userfiles/files/temezifekazufogawoxud.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_off0000b9a2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB9A2 | 18872 bytes |
SHA-256: 3c70e5ad6a616823756787cde991920f7116c7c406b91e83194a082cd89177f7 |
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font_01_sfnt_off0000e9a7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9A7 | 10220 bytes |
SHA-256: 119179705663e9c4088c9e2dc714eac2e019a3d0fd66c0e63eb18bdff1b867ee |
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font_02_sfnt_off00010092.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10092 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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