MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains a link farm pointing to compromised WordPress sites, suggesting an attempt to host malicious content. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt, likely using a lure of free online medical education resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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=onlinemeded+pdf+download+free PDF link annotation
- http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609ea5addec13---9907326121.pdfIn PDF document text
- https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160833c9758450---49241159444.pdfIn PDF document text
- http://selfmadefilms.nl/userfiles/files/jetemidabezatezamudanubu.pdfIn PDF document text
- http://habitat3.eu/userfiles/files/zujibopobileveta.pdfIn PDF document text
- https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/6602219c222b80816e7712e1e8d8cc44/10849445058.pdfIn PDF document text
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/rra0recihhd04mfprp95mm8ip1/najemadadobabigisukokam.pdfIn PDF document text
- http://banghaija.com/userfiles/file/jojogoloneko.pdfIn PDF document text
- https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/e9fb4eb06f9429057f5eb6938903371b/21216146365.pdfIn PDF document text
- http://samafb.org/uploadfilefiles/652124095.pdfIn PDF document text
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/2b90ffa18bc7e8188c423f9b2dd97aff/25643807012.pdfIn PDF document text
- https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/125a2f4f16c6800b9f5b17aefc53196f/mofevosepafovolefe.pdfIn PDF document text
- https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/a8c1255c0a96898e35d01e2119720853/lunivijilidixuxamubazi.pdfIn PDF document text
- https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/jno19j0kfigp5cgn0l3a2polm1/79541269118.pdfIn PDF document text
- https://prtl.pl/userfiles/file/36602729798.pdfIn PDF document text
- http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec77e3d674---vibot.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e461.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE461 | 5128 bytes |
SHA-256: 9cdeb2647b9b616a1938ad825976270a90760047e2d6144307a452856e887a3d |
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font_01_sfnt_off0000f5cd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5CD | 11364 bytes |
SHA-256: 55ef7c574b5c2178bb67d52f5d48b7db5fb657256c20d693c8fe884628502b6f |
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