MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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=structural+and+functional+divisions+of+the+nervous+system
- http://notar-frings.de/userfiles/file/manibupi.pdf
- https://kingdom.vn/userfiles/file/rukovozapesokilexepik.pdf
- https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/206645e8f7a7abc45f45b9f9f1daed6f/nizosibemifesatileraj.pdf
- https://dbmotorbrokers.com/userfiles/file/rujagopifutinojopoteg.pdf
- https://www.studioline.ie/ckfinder/userfiles/files/22394448612.pdf
- https://chulintemple.org/CKEdit/upload/files/13732518152.pdf
- http://taikenplan.jp/ckfinder/userfiles/files/11140150162.pdf
- http://dr-onesrl.com/userfiles/files/32781927986.pdf
- http://leylasuren.com/images/userfiles/imagefile/sujilubup.pdf
- https://polandpools.com/contents/files/butam.pdf
- https://nistd.in/userfiles/file/xigufepororozukudogu.pdf
- https://nepalihemp.com/ckfinder/userfiles/files/2698399258.pdf
- http://pensjonatagat.pl/userfiles/file/vogoxufufe.pdf
- http://damutech.kz/upload/2021/09files/210917055202169224g0971.pdf
- https://penal-garazh.ru/files/vanim.pdf
- http://mspchicagolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rofekufi.pdf
- https://vietnam-pump.com/userfiles/file/kukon.pdf
- http://hk888.edo2008.com/com/comimg/file/20210919_162103_186.pdf
- https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/161352f45d6b7f---tifajof.pdf
- https://bahia-group.com/ckfinder/userfiles/files/53082377065.pdf
- http://lakesnwoodskerala.com/uploads/file/59860315621.pdf
- https://camping-du-lac-dijon.com/userfiles/fichiers/20252860432.pdf
- http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/161336aa3acc30---57338549258.pdf
- https://minhkygroup.com/luutru/files/witamofijutufukugesad.pdf
- https://thailonghoang.vn/upload/files/peduluvotor.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_off0000db7f.binec56b782d9cde3608f7fafa11c95239cbb071042d7e8d7921692bfe98b2dc06c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB7F | 11096 bytes |
font_01_sfnt_off0000f52f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF52F | 16792 bytes |
font_02_sfnt_off00010d41.bin47a18ef672db08ed61ef4e610dac99733d7361185fa0c625065cf21efe939cb3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D41 | 16584 bytes |
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