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 embedded URLs, many of which point to compromised WordPress upload directories or disposable hosting, suggesting a link farm designed to lure users to malicious content. The presence of external URI heuristics and the ML classification strongly support a phishing or malware distribution attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9935
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://chcial.ru/uplcv?utm_term=watch+luca+2021+online+free+123movies
- https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/161346706d1674---23242139895.pdf
- http://sladkiy-ostrov.ru/userfiles/files/gowofabipadododowufaduxoj.pdf
- http://yas-center.ru/userfiles/file/29368005366.pdf
- http://showplus.ae/userfiles/files/tapuwinonoturuse.pdf
- http://viettelhaiphong.me/data/dulieu/files/kejovezamaza.pdf
- https://www.antoniopopolizio.it/ckfinder/userfiles/files/powake.pdf
- http://nelly-design.ru/upload/files/54150829881.pdf
- http://cuacuongiare.vn/upload/files/53471480787.pdf
- http://solar-makernavi.com/ckfinder/userfiles/files/6473404941.pdf
- http://perfect-gallery.com/userfiles/file/80472888083.pdf
- https://carmelocuritiba.com.br/ckfinder/userfiles/files/rupewoxotigoz.pdf
- http://wadsoda.com/UserFiles/File/92691042974.pdf
- http://thingsantiquesla.com/userfiles/files/53367342003.pdf
- http://chiangmai-esc.net/user_img/files/tipomavipuxonulenijoki.pdf
- http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b6d00bc005---6007103038.pdf
- https://petpetmates.com/files/editor/file/vowagovereseterexeze.pdf
- https://marblobaths.com/app/webroot/img/files/pejonegiriniwapukipol.pdf
- http://tugrabilgisayar.net/resimler/files/82019208106.pdf
- http://www.pvvc.cz/files/kolisuvalanizugisejavuv.pdf
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/161422ebdb78b3---telubiz.pdf
- http://rund.cz/UserFiles/File/7853741363.pdf
- http://wish-pharma.com/upload/files/68823454323.pdf
- http://slovbau.sk/test/userfiles/file/86853700248.pdf
- http://carrollcountylawyers.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/92375650837.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_off0000f8ef.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8EF | 16792 bytes |
font_01_sfnt_off00011106.bine58cf3bc1bdef6c2ff9cdce4b3934c23bfbdf77420a09dd4797e99d66ad25395 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11106 | 11228 bytes |
font_02_sfnt_off00012b4e.bina966e40c61606a5d07761063479d598bf344b04613d0ba524b6982c6261fa111 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B4E | 20232 bytes |
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