MALICIOUS
196
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 links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_RANDOM_URL_LINK and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this. While no scripts were explicitly extracted, the overall structure and URL patterns are consistent with phishing or malware distribution campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 7
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://archism.ru/uplcv?utm_term=completing+square+method+in+quadratic+equation
- http://gndpta.eu/news_objects/files/2348984795.pdf
- http://www.deco-interieure.com/userfiles/file/xamiterapuguz.pdf
- https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/7adngb4fmohfdaqsrk7mjf5hq2/titatotajalaxol.pdf
- https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16143a8262b57a---masogizokosanelabigun.pdf
- http://crystaltrade.hu/data/file/94936123360.pdf
- http://xn--3e0b556bhrbowi6undva.com/ckupload/files/45393277906.pdf
- http://fteq.ru/files/file/70101636679.pdf
- http://altiro.nl/home/tjerk/file/gudenobosudoxumegudenixuv.pdf
- https://bluetact.com/locktactyuma/userfiles/file/73743566054.pdf
- http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/16132e2be8c1e3---43082311134.pdf
- https://hkpefa.org/editor_upload/file/92776040743.pdf
- http://ambulatorioveterinariobubiniregini.eu/userfiles/files/80620301159.pdf
- https://mujeresenmovimientoplus.com/userfiles/file/25966770385.pdf
- http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/pg9odch6u9vlnl9938k47ba331/39159505680.pdf
- https://thegmsbihta.in/userfiles/file/62227716443.pdf
- http://assisdrive.pt/userfiles/file/56725864959.pdf
- http://sadiqandsons.com/userfiles/files/8487618297.pdf
- https://audreyheselmans.com/_files/file/pevetakasabef.pdf
- http://fc-junajted.com/upload/datoteke/79175624640.pdf
- https://vegan-eshop.cz/data/file/43061338102.pdf
- https://kisikana.hr/userfiles/file/tesumomo.pdf
- https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613c5eed53428---nowujalometajorikisuriji.pdf
- https://ngenadmin2.nextgenphotosolutions-beta.com/app/webroot/files/file/vewagolenowazozazaz.pdf
- https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/2d38612db10dd697765520ecf86fa0c9/56249741233.pdf
- http://vtvxm.vn/userfiles/file/xenirokuduxuxatubon.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_off0000c4a2.bin31decc65fedd84c9d288a41ba035d9a8a9937411111eb66bc22ff5f2f118436f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC4A2 | 11240 bytes |
font_01_sfnt_off0000de38.bindd549292b74dc49cc60b3140aff4f353f827cbd2752317aa3247e732abf8ebfb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE38 | 17508 bytes |
font_02_sfnt_off00010b14.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B14 | 16792 bytes |
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