MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple compromised WordPress sites hosting PDF files, likely as part of a phishing or malware distribution scheme. The presence of numerous links on disposable hosting and compromised CMS uploads suggests an attempt to obscure the ultimate destination and evade detection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086b0d44c88d---48995333999.pdf
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160888d442e1a1---26576484676.pdf
- https://finances-canada.com/wp-content/plugins/super-forms/uploads/php/files/6a665bbe78588918fa1ad1426688244e/mironutirokalujip.pdf
- https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/pv3hva9b8kibh49e6kaphk6i85/zitolidosexexororixu.pdf
- https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/44173b934824e9b1928e60c09973bf13/90723641046.pdf
- http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c20da626448---najegixuvowazajilurez.pdf
- http://thuaphatlailongthanh.com/upload/contentFile/minhchau/file/82204239380.pdf
- https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/23ec0a6c67fc9b73d4409d03c3e98170/tegizakovaw.pdf
- http://arci-mp.fr/admin/File/11753992372.pdf
- http://weymouthhighschoolclassof62.com/clients/5/50/50fe23896e84432c97ff20d680692bb9/File/9338346307.pdf
- https://snqrsl.quebec/upload/editor/file/26978411407.pdf
- http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a0b18bb9338---26724036096.pdf
- https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/uvr55n513sb1uhs8aa8b3j5pa6/buwoz.pdf
- http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1eea51f913---geveru.pdf
- https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/9bd5e6e87c46e1feaa9db948022f3e04/19202121165.pdf
- https://ooobelkom.ru/ckfinder/userfiles/files/patexasasuv.pdf
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c040cb02a3d---kuwenivuwawixupulexodadik.pdf
- https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/c4ea31976fa0a747bacb993def715b3a/zorarokotebe.pdf
- https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/dd6bd4617a042023685016770e59856a/68852405350.pdf
- https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/d4f9385bd7a5c8b11ddaa5351d2ccf35/nigamowixi.pdf
- http://imi.vc/upload/files/xewukijijumaruzixesij.pdf
- https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b60bcbe138c---79203867501.pdf
- http://skrabl.pl/www/rpbd/fck/file/nifidupubajosos.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=law+of+total+internal+reflection
- 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_off0000ec39.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC39 | 16792 bytes |
font_01_sfnt_off00010450.bin3978ed7cf2fc334f6db579dfd45fb2a221ea7460963febbd3f54a3706966c6e6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10450 | 10204 bytes |
font_02_sfnt_off00011b55.bince4be1f0c0155feba1988de1a3d0b70cbe887e16e506dd09b41b4c92a3c3f0a4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B55 | 18108 bytes |
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