MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and links to compromised WordPress upload storage, suggesting it is part of a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the heuristics point towards an attempt to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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://smidgel.ru/uplcv?utm_term=android+recovery+update+from+sd+card
- https://pypconsultores.mx/userfiles/file/tabutigu.pdf
- https://luatkhangthai.vn/upload/fck/file/6468838212.pdf
- https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1613dbfb7bfea9---tesapasotupajubusugefaz.pdf
- http://xn----7sbakif2a3azdub.xn--p1ai/admin/ckfinder/userfiles/files/fewidujojepa.pdf
- http://epwuae.com/userfiles/file/girisu.pdf
- https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/658744865b12bed33c8d5759c3809fb7/30434354950.pdf
- http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139925965929---1535225046.pdf
- http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16142945cb81d9---24590272506.pdf
- http://vzwsportenmuziek.com/content_docs/gelix.pdf
- http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1613f58cda04f2---ratalokajadevit.pdf
- http://cowmoo.org/ckfinder/userfiles/files/77301838371.pdf
- https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c7cc1435c0---56544492980.pdf
- https://nilsahost.com/calisma2/files/uploads/bokemulek.pdf
- http://autoscuolapezzano.it/userfiles/files/dilirepeluxuratejabof.pdf
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/16140f42d689fb---momomedeg.pdf
- http://dongamold.com/fckeditor/upload_files/file/vedan.pdf
- http://kht.civilkozpont.hu/uploads/file/64621386727.pdf
- http://momsystem.ru/public/file/gubajusafitafudojomerasu.pdf
- https://groupburuemas1.com/contents/files/53864358904.pdf
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/161438a42431c0---92035105062.pdf
- https://0955205219.jwa.tw/userfiles/files/58198695591.pdf
- http://storemisr.com/uploads/files/giwesolepupujuxosubapag.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_off0000e651.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE651 | 16792 bytes |
font_01_sfnt_off0000fe63.bin54c8c2de528fa0aaf3c4e10a017a16d72996d7b7c1a167366fda0c45ed07d375 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE63 | 18984 bytes |
font_02_sfnt_off00012fa0.bin0b0cddd39249376ab0150657a55807b5d838239d24779e2a8b703147c6f37051 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FA0 | 10996 bytes |
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