MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The presence of an embedded JavaScript stream and a high number of external links, many pointing to compromised CMS uploads or disposable hosting, strongly indicates a phishing or spam campaign. The ML classifier and ClamAV detection further support its malicious nature, likely serving as a lure to malicious websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://cructi.ru/uplcv?utm_term=discrimination+and+harassment PDF link annotation
- https://toocapen.com/files/48199017477.pdfIn PDF document text
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614bb30400986---xesusugu.pdfIn PDF document text
- https://majubesar.info/contents/files/galotupovenojemefajula.pdfIn PDF document text
- http://ride-on-earth.com/images/blog/file/kitojux.pdfIn PDF document text
- http://zechnerbau.at/images/content/files/79966414623.pdfIn PDF document text
- http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/161332bba61cea---rekalesej.pdfIn PDF document text
- http://theclubburger.com/uploads/files/61066723571.pdfIn PDF document text
- https://ww150005.linebot.net/upfile/files/20210925131430.pdfIn PDF document text
- http://aajude.pt/backoffice/ckfinder/userfiles/files/22724435691.pdfIn PDF document text
- https://www.pessin-location.fr/ckfinder/userfiles/files/dufanupafevoxisurikotu.pdfIn PDF document text
- https://nepaltrekkinginhimalaya.com/assets/userfiles/files/wuduzuxozuzodemibita.pdfIn PDF document text
- http://zavalinka.by/var/upload/file/86695049043.pdfIn PDF document text
- http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16141ba2926452---3889516830.pdfIn PDF document text
- http://algarestofos.pnh.pt/js/ckfinder/userfiles/files/gaxiverumikama.pdfIn PDF document text
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614b55f8e599b---mopoxexikipejikutogiv.pdfIn PDF document text
- http://starcity-vinhomes.vn/app/webroot/img/files/vivisazesupafigepivo.pdfIn PDF document text
- https://shinaltd.ru/images/file/20594524339.pdfIn PDF document text
- http://alituncer.com/userfiles/file/nefipob.pdfIn PDF document text
- https://mraos.com/web/userfiles/file/96675720302.pdfIn 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ab60.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAB60 | 15248 bytes |
SHA-256: 51691184c4d7721b49c94253d394aa6eb35c6da1812970ee603364497bb26120 |
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font_01_sfnt_off0000d192.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD192 | 10588 bytes |
SHA-256: 0ca174548d9eed85a9a3f067cd7900b8e4aaf2725cb50cfd1a06aab4657fddc4 |
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font_02_sfnt_off0000e993.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE993 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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