MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file that contains embedded JavaScript, which is a common technique for executing malicious code. Several heuristics indicate the presence of external URIs, including one pointing to a raw IP address and others hosted on compromised WordPress sites, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 8
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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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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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 http://tomei4x4.jp/js/upload/files/wumiwomunimoli.pdf
- https://isosklo.cz/uploads/34178431734.pdf
- http://garage-ys.info/js/upload/files/tugebom.pdf
- http://12shio5.com/contents/files/rovenowujanurijawapide.pdf
- https://rentcar888.com/uploads/files/202109031532224528.pdf
- http://4998horo.gmmwireless.com/contents/files/48794954913.pdf
- http://chaputlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jimagulidipixasakapok.pdf
- http://kammerchor-lindau.com/file/romezefovurexutufimulok.pdf
- http://spbmedax.ru/sites/default/files/uploads/81227677266.pdf
- http://karinameal.com/imgdish/files/15693200660.pdf
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e8581645f3---niminifobojobesejulimiv.pdf
- https://fallsplat.se/bildbank/file/4399785906.pdf
- https://hohsingfiber.com/ufiles/files/vumoxulegaladijatevilusa.pdf
- https://rafaellopezehijo.com/upload/files/bujum.pdf
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613bc4c04e54f---jumaxobomilazedejup.pdf
- http://csptech.net/admin/userfiles/file/43942553075.pdf
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137d1eb08128---14063339808.pdf
- http://charolais-hessen.de/write/userfiles/file/27748886527.pdf
- http://xn--or3bi2da319p.com/upload/fckeditor/file/vizufugelisikajoxid.pdf
- http://kartinatv.org/uploads/files/gekigo.pdf
- http://140.121.125.49/ckfinder/userfiles/files/20210901_144728.pdf
- http://sztarmedia.hu/_user/file/38191599182.pdf
- http://aerotherminsulation.com/userfiles/file/72856841893.pdf
- http://firewheels.pe/userfiles/file/zupudeb.pdf
- https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/161406c0a5d033---2192149916.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=doki+doki+literature+club+for+android
- 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_off0000dc33.bine59f39225b27012753e87bfe6bb913147903dabd5ba93a5bcd6122448c421692 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC33 | 10632 bytes |
font_01_sfnt_off0000f49b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF49B | 16792 bytes |
font_02_sfnt_off00010cad.bine30c76af0fc7954bfb7768f314d9117fae8c77f64fb34457a0f70d7fe187dc75 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CAD | 20052 bytes |
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