MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs that point to other PDF files hosted on various domains, some of which appear to be compromised CMS uploads. The presence of 'utm_term' parameters in some URLs suggests a phishing or SEO-based lure to attract victims. No scripts were extracted, but the structure strongly suggests it's a component of a larger phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.6181
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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PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILEDThe cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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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://cructi.ru/uplcv?utm_term=all+in+one+video+downloader+apk PDF link annotation
- http://aalzkj.love-mrt.com/upload/files/sexemanexewaxogogexixof.pdfIn PDF document text
- http://munnarinfo.in/userfiles/file/16057236935.pdfIn PDF document text
- http://cayxaotamphan.net/userfiles/image/file/57832165441.pdfIn PDF document text
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1612f2fa73b0e8---bifajoxuzevojowipaduvid.pdfIn PDF document text
- http://palazzodiaz.com/userfiles/files/loxabaxanafeboti.pdfIn PDF document text
- http://mdbim.pl/ubezpiecz/obrazy/file/gexeruvivegojilazeje.pdfIn PDF document text
- https://studiecarriere.it/uploads/file/58150206653.pdfIn PDF document text
- https://gulf-rope.com/images/bulk_images/files/18485225046.pdfIn PDF document text
- http://avandcie-automation.com/ckfinder/userfiles/files/lolevub.pdfIn PDF document text
- https://takarasushimn.com/userfiles/files/35855918967.pdfIn PDF document text
- http://markasib.ru/ckfinder/userfiles/files/memazizaxini.pdfIn PDF document text
- http://logisticsnetworks.net/ckfinder/userfiles/files/96764288075.pdfIn PDF document text
- https://sandipkumardutta.com/ckfinder/userfiles/files/powaki.pdfIn PDF document text
- https://vsevolozhsk.mebel18.com/uploads/files/3224925583.pdfIn PDF document text
- https://herfection.herfection.tw/upload/ckfinder_temp/files/20210907011128.pdfIn PDF document text
- https://gberwanda.com/gbe/useruploads/blogs/files/93392710978.pdfIn PDF document text
- http://bhartiyambeohari.in/userfiles/file/mufozapabudopesosufej.pdfIn PDF document text
- http://defhjdrjioo.friend-match.com/upload/files/zakevam.pdfIn PDF document text
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/ce88c17665e9a9565907b7a3565533c5/68061960634.pdfIn PDF document text
- https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161325813b0a6b---wijanujipapevapexij.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613476bed08b3---tapezaxoxabijawidakigik.pdfIn PDF document text
- http://www.pantonerestauri.com/ckfinder/userfiles/files/38536714401.pdfIn PDF document text
- https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/d72fb8f5adc0a5a3cd37a1cc9dd130da/63070629011.pdfIn 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_off0000dca4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCA4 | 18144 bytes |
SHA-256: 719853af1776f2757758ad64becdaed5fef672e4b32b08d1766e4984c29e11fe |
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font_01_sfnt_off00010c24.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C24 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001243b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1243B | 10344 bytes |
SHA-256: 9ddf4a13086dca72a1653da67a804943a57bba5b97d56d600a18ee97e5ffe78a |
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