MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous external URIs and embedded links, many pointing to compromised WordPress sites, suggesting it functions as a link farm to distribute phishing or malware payloads. The presence of external links and the nature of the heuristics strongly suggest a phishing or credential harvesting campaign, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9877
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://crewmak.ru/uplcv?utm_term=mbox+a+pst
- https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/2d797dab8e7ddacd380fcd7a6bcb36b7/lejepafenujuxulikofisu.pdf
- http://food-cloud.com/home/food-cloud/www/site//site/data/files/10241116975.pdf
- http://riverside-plaza.com/upload/userfile/files/69186662059.pdf
- http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094c2272ccf4---zuvajuvobijomizib.pdf
- http://delvalle68.com/clients/54584/File/vazubebiduzigubawegi.pdf
- https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/904c10ead15e02c117fde744d83dfb2e/bowarexogazamegejaxiwejit.pdf
- https://travelsafeway.com/userfiles/file/66516599909.pdf
- https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/51dd27c1a7c19bf1dbadce1ca340a8c4/tokozasop.pdf
- http://agcslohian.com/userfiles/file/daxafapovidekamoxu.pdf
- http://iphonedown.com/ckfinder/userfiles/files/98745302029.pdf
- http://rmgoals.com/userfiles/files/zulevubijetenavilefemamav.pdf
- https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16082f014a458b---fedudobaw.pdf
- http://eviljoy.com/UserFiles/File/kivujujotumotawa.pdf
- https://jordan.si/dokumenti/file/70760057868.pdf
- https://sealordhotels.com/ckfinder/userfiles/files/66563234437.pdf
- http://industrialdevices.in/uploads/30218177780.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b55d0efbb.pdf
- https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/d3b0c3b0d3fd06cda676c69e8b10ac3b/larefoz.pdf
- http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160e95c106b0ba---tipapabor.pdf
- http://andreaslasnik.com/data/files/maxazilu.pdf
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/37153c539edd902a5a7df5b6b772e1ac/79577796710.pdf
- https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/68f2747147b07f9f166052b71ccabe4b/6540912709.pdf
- http://writtenmail.com/upload_images/file/98900684878.pdf
- https://hotel-la-licorne.fr/userfiles/file/75598073711.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 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c740.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC740 | 16792 bytes |
font_01_sfnt_off0000df57.bin6d17cc7803c936429345477a7835da9d74c4b820d84380df84788754855e4e1c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF57 | 10008 bytes |
font_02_sfnt_off0000f580.bin88f54c55e7c62323177d1498dc7524a1fa130df842d6b8e2f46fb3f5fa4c94ae |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF580 | 1772 bytes |
font_03_sfnt_off0000fde0.binab19e2d71f877922f5277e12aa6ed05177634bfef450f289201b31bcf0009d74 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDE0 | 18568 bytes |
font_04_sfnt_off00012c16.bin7d15b2d6d265aaca51dda18faee70a1b8fa9d95ed54cb111fb0895789092f9ae |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C16 | 16312 bytes |
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