MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to redirect users to malicious content. The primary URL, 'https://laborke.ru/uplcv?utm_term=5+seconds+of+summer+youngblood+download+mp3', appears to be a lure for a song download, likely a pretext for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
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://laborke.ru/uplcv?utm_term=5+seconds+of+summer+youngblood+download+mp3 PDF link annotation
- http://ahdongjiu.com/upload_fck/file/2021-4-29/20210429211026855775.pdfIn PDF document text
- http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160acb20a6371e---lutisulikidotipokekef.pdfIn PDF document text
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609a5510a9d51---pipiputanogegifezebis.pdfIn PDF document text
- http://beachfirebrands.com/userfiles/file/12776174324.pdfIn PDF document text
- http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb9ff89b9d---nugemasakolozilimu.pdfIn PDF document text
- http://lungtransplantopen.com/clients/d/de/de7cc03d42bda6b8b84c8ac9728529bb/File/liwevofivu.pdfIn PDF document text
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160a3048219dff---99510562230.pdfIn PDF document text
- https://celebicatering.com/upload/ckfinder/files/juwazanopazol.pdfIn PDF document text
- http://thunderstar.cn/userfiles/file/20210525022012759062816.pdfIn PDF document text
- http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607335629adf4---32815532081.pdfIn PDF document text
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/hh9satkh7ioc4uu72obmu5q054/lababakewopel.pdfIn PDF document text
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/561d8f55eaed2b608fa5031378e52173/74661560431.pdfIn PDF document text
- http://newgatedesign.com/Images_upload/files/vaxajubepu.pdfIn PDF document text
- https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/79f2f9523d3e7c551e43037cb531587e/56013218450.pdfIn PDF document text
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160d61c5005b49---39159514785.pdfIn PDF document text
- http://bethtikvahevents.ca/clients/2/20/20a91c0cb94b02964b0d1c5d980f1596/File/sikuze.pdfIn PDF document text
- https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/df5a46c3e2a4bd0fde11dfbeef008d70/nevakam.pdfIn PDF document text
- https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/a7f8e79f462598c176d76468c41e6c1f/26789630168.pdfIn PDF document text
- http://grandinhr.eu/images/user/file/93549176561.pdfIn PDF document text
- http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c039a39cf9f---92549999570.pdfIn PDF document text
- http://se-ty.ru/uploads/userfiles/file/91734724858.pdfIn PDF document text
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/jdso1k35uo0puuved9ad891gq1/88331830984.pdfIn PDF document text
- https://kudamatsu.org/userfiles/file/kigazodasaw.pdfIn PDF document text
- https://semineebrasov.ro/printuri-fi/files/rosotanofisokezakejo.pdfIn PDF document text
- https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080bc1e04c7c---teziditejavefonopid.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_off0000c941.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC941 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e153.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE153 | 18728 bytes |
SHA-256: f63e204981bd8f41755c7edfee2d6c6f86dd35f07dea1da63b08190be0e02437 |
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font_02_sfnt_off0001120f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1120F | 11420 bytes |
SHA-256: 022e13fccf5c0078fb59df1aceb615ddc21c86f44847dfcae85c294c8bafe9ca |
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