MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics as malicious, including a machine learning classifier and ClamAV, indicating it is likely a phishing or malware distribution document. It contains numerous embedded URLs that point to various domains, many of which appear to be part of a link farm hosted on potentially compromised or disposable infrastructure. The presence of these links suggests the document's primary purpose is to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://crewmak.ru/uplcv?utm_term=fba+emulator+apk
- http://bikipvuikhoedep.com/app/webroot/files/editor_upload/files/jadomirasivof.pdf
- http://humanitool.ru/userfiles/file/fidesodivoxipo.pdf
- https://hostsolutions.ro/app/webroot/files/userfiles/files/lonewaxuwutijepirop.pdf
- http://gianniarnaudo.com/userfiles/files/redutijaralelekip.pdf
- http://ubytovani-budejovice.cz/picture/vtextu/file/naxotigegizuwat.pdf
- https://transilvaniafishing.ro/app/webroot/files/userfiles/files/23974747435.pdf
- http://aktifithalat.com/resimlerfiles/ginozikawotekogel.pdf
- http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/161427ae4c00e7---23670709746.pdf
- http://terwaarde.be/ckfinder/userfiles/files/98193230294.pdf
- http://klccpa.com/userfiles/file/kewixezeramotesasewo.pdf
- https://leganordavigliana.com/uploads/file/77540566306.pdf
- http://home-hj.com/up_photo/file/sogixafidupusenegodabov.pdf
- http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/161411912596e6---navudamudux.pdf
- http://makassitools.com/userfiles/file///jajarukolekudokutotagarep.pdf
- https://shidoremicrosys.com/media/momuxijifesilago.pdf
- http://synhbio.com/upload/files/ximiwaj.pdf
- http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cf6200424e---befupokelo.pdf
- https://netlandschool.cl/files/57748826774.pdf
- http://studiotecnicodambra.eu/userfiles/files/9304074465.pdf
- https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16137eadd790e5---78328926077.pdf
- https://www.displaysdirectaustralia.com.au/application/third_party/ckfinder/userfiles/files/91127202197.pdf
- http://umffz21.ru/admin/ckfinder/userfiles/files/77259124200.pdf
- https://asiantms.com/ckfinder/userfiles/files/pavakixabul.pdf
- http://fujavietnam.com/images/Download/71897478134.pdf
- http://babyindex.nl/images/uploads/vepaxosinewowepifetojes.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_off0000daf8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAF8 | 16792 bytes |
font_01_sfnt_off0000f30f.bineef76391afc1d76886362d1bc133749d7dd42c5d2fe1fe6c0049282fc1fb2ed2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF30F | 10360 bytes |
font_02_sfnt_off00010a46.bin546f3f7769084368a88e6acaefbef8db9712f9629ef3511861ad5df3d5de159c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A46 | 18136 bytes |
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