MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document functions as a link farm, with numerous URLs pointing to compromised CMS upload storage, suggesting an attempt to lure users to malicious sites. The presence of multiple external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic further support this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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 http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b611f97cd1c---38706681325.pdf
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2ca0c21bc8---lulefa.pdf
- https://ecoledesgourmets.com/userfiles/file/kamalof.pdf
- https://vicotelecom.vn/static/source/images/file/zerej.pdf
- http://tscyw.net/userfiles/file/20210805232236_gsut90.pdf
- http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b76975056---buwowesapenatapasit.pdf
- http://dush-kz.ru/uploads/fck/file/vilizijuzarumukat.pdf
- http://ebbers-schilderwerken.nl/uploads/files/49655585942.pdf
- http://teresachild.com/upload/files/digufezumibidijakakemude.pdf
- http://anandtouristcorporation.com/uploads/vivobedimobaxarovujor.pdf
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a2f69cd7bc8---pinirebuwumanet.pdf
- http://ck-kutnahora.cz/gais/image/file/zunilepaxuvi.pdf
- http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c434c8803cb---pasem.pdf
- http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a58180260b5---41816488847.pdf
- http://masan315.net/board/imagefile/file/56211950005.pdf
- http://elitakhealing.com/ckfinder/userfiles/files/83691640633.pdf
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/75b2c007ded1311a37dedb0bec22bd0f/fajopezefege.pdf
- http://jucal.es/images/file/37912625857.pdf
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608593b8892fe---22773311470.pdf
- http://a-kamen.com/userfiles/file/73568695089.pdf
- http://slenderclub.cz/ckfinder/userfiles/files/zudorikexedezamowidajuw.pdf
- http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083d0e60daa6---bikudizu.pdf
- http://zonweringnederland.com/ckfinder/userfiles/files/89053945188.pdf
- http://train-in-japan.com/images/blog//file/94405860244.pdf
- https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/298755bfa9eaa5a35ea60b5e3a9378a5/51208732128.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=ciencia+e+ingenieria+de+los+materiales+donald+askeland+7ma+edicion
- 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_off0000e99e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE99E | 16792 bytes |
font_01_sfnt_off000101b5.bin47aa001d61425a681826bf0831e56b58095c996f45ef75ab6d09bd51d3825a6b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101B5 | 10888 bytes |
font_02_sfnt_off00011abd.bina89d6185e950074c15de84b0d3bc0007301622dde160d5568d5c9b71ccb76852 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11ABD | 18588 bytes |
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