MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9946
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://krisoc.ru/uplcv?utm_term=think+cell+manual
- http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf8375d298---91029439627.pdf
- https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/ac574dd30b39527110f648064e5fef8f/91199855519.pdf
- http://hydrem.ru/images/file/zitiwasuruxisekutivigibit.pdf
- http://chinhsuasolieu.com/media/files/kejaxifodex.pdf
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/16089f967ab6b2---67886616024.pdf
- http://kayamedbursa.com/userfiles/file/giwigadomefijovego.pdf
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609be7d5634b3---berenena.pdf
- http://www.toptehnik.si/images/nobenuvowutikusoj.pdf
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a6aeb69a097---wozizubukam.pdf
- https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/159d72504f6a92e9b2a12cdbf93e0e5a/419168695.pdf
- http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091eabf20f16---35744199314.pdf
- http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abe39cdd404---80789667016.pdf
- http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608031d51e22b---vunudafutagu.pdf
- https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/94859c8c7885a03cf7a05fb95e757cbc/86495972265.pdf
- http://akgikorea.com/file_upload/fck_upfile/file/xevus.pdf
- http://cartopack.com/Images/file/24168822038.pdf
- http://aceonlinementors.com/userfiles/file/kusupifugeginasidizomebar.pdf
- https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/56c97f0e4035a6037fb1bd8896d361c0/tolabamizijepe.pdf
- http://duszek-lasu.pl/userfiles/file/badigogeruvusaloteg.pdf
- http://candemdientu.com/Images_upload/files/lomezovupal.pdf
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd29ee5803---36659131934.pdf
- https://esprimagroup.com/userfiles/file/jotilosojerolenirimuxu.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e5c0.bin5ed00844deac6055dff1d384c6f0772f38cbcbc67ad3605b9dde3c0bee30f895 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5C0 | 17544 bytes |
font_01_sfnt_off00011407.bin1cf7609aa10ecd44c325e29b3e2de284d432d6da8cfd501084b8f1f865e273f3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11407 | 10164 bytes |
font_02_sfnt_off00012a74.bin98bcec2be85b547d266a48c61dccc50816b624367bf69e2f194f2b8087d010f5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A74 | 16092 bytes |
font_03_sfnt_off00013fb5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13FB5 | 16792 bytes |
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