MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of PDF-specific heuristics like 'PDF_URI' and 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this attack pattern. No scripts were extracted, but the overall structure points to a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://inwebjor.ru/uplcv?utm_term=quickreply+for+android
- http://www.thunderesp.com/ckfinder/ckfinder.htmlfiles/bikodepavon.pdf
- http://bellamy.tw/uploads/files/202109011152456631.pdf
- http://sibinetweek.ru/userfiles/file/85029480106.pdf
- http://vestmorecapital.com/images/epost/kudiv.pdf
- https://biogenetixpharma.com/ci/userfiles/files/76909980917.pdf
- https://z87992961.com/upload/files/20210919201529.pdf
- http://umrllc.com/userfiles/files/50596925388.pdf
- http://metisentry.net/ckfinder/userfiles/files/vegavojo.pdf
- https://praktijkbinnenstad.nl/file/menazuk.pdf
- http://lotusromeo.fr/app/webroot/files/userfiles/files/bosinewazu.pdf
- http://ac-kenigsberg.ru/files/file/jamikapezodi.pdf
- https://clinicaalcantara.es/sites/default/files/userfiles/file/nuwori.pdf
- http://yilip.net/userData/board/file/9765528041.pdf
- http://medicaldistri.com/ckfinder_files/files/44581117501.pdf
- http://makesomenoise.hu/upload/file/20515361928.pdf
- http://www.tsahimmongol.com/uploads/images/files/pidada.pdf
- https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/5fef12d2bf4c9870a6f82cd8c9e37500/bowakarufeg.pdf
- http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/161399c1bdcf04---16067482247.pdf
- http://neoneophytou.com/ckfinder/userfiles/files/92751436865.pdf
- https://needletherapy.eu/upload/file/kevijikufez.pdf
- https://zahidnawaz.com/UploadedImages/image/30909893544.pdf
- https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/68ce54e3e718de5b99d83d9177693fad/74776703330.pdf
- http://seamacros.com/upload/file/pafuxizibu.pdf
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/161454ba6112cf---66126563456.pdf
- http://artiguardia.pl/userfiles/file/10370114017.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_off0000b058.bin7176e6103b31b7c1ee3e3b8a598854c8596845aadfc7ffedbd9c353c67076d5e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB058 | 15628 bytes |
font_01_sfnt_off0000d7ca.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7CA | 16792 bytes |
font_02_sfnt_off0000efe1.bin18c1b55b6ecfbd93ac8279f05cf922a75b845ce56a1b54193d4d6e13a6d4255f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFE1 | 10712 bytes |
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