MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities or delivering malicious content. The PDF also contains numerous links pointing to compromised WordPress sites and other disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution via these compromised sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606e48d39cffc---45567907837.pdf
- http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071180b6b9c8---zarojipijedubaletuja.pdf
- http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cf5f9db9be---9279027225.pdf
- https://haps.company/wp-content/plugins/super-forms/uploads/php/files/80u3sok7cn5699nrf210f1of87/29302677696.pdf
- http://drjoecarver.com/clients/49355/File/67320910110.pdf
- https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f427d793cf---80904279150.pdf
- http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/iudml43n0mppfjfuhc3baud5qc/19291328039.pdf
- http://myboydfamily.com/clients/7/7f/7f513a2250c12de81a70a6735749c289/File/movisu.pdf
- http://bestapp4u.com/admin/uploadedfiles/file/78228342045.pdf
- http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16084c463b8c50---lamevijoledimasidewijuru.pdf
- https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/4jf2e7n81omu3l0nb62dllckpj/23454634834.pdf
- http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608b9fc94f7e4---xutukexof.pdf
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160788e3e727d4---20159639400.pdf
- http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d44c23e93cf---59532552959.pdf
- http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a26657a571---mepixuzusitekejigudenonig.pdf
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608975c79a81d---2082021732.pdf
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160bbdb78cf519---96600532793.pdf
- https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/iq7jntuci9vm2vamd60nr84dti/narezig.pdf
- http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3031cd312---56172857693.pdf
- http://technoauto.jp/js/upload/files/59844907995.pdf
- http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c5e9f1aacad---xarosa.pdf
- https://davidfauquemberg.com/home/fauquemb/david/bbdg_site/userfiles/file/binil.pdf
- http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abb1da8d810---tuxobagebatatajemegejuxuk.pdf
- https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160851a1d2e6a3---tukaposokewalebokozate.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=biology+a+level+revision+guide+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_off0000d10d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD10D | 16792 bytes |
font_01_sfnt_off0000e924.bina65958d8ffb2d948316082e6e6e9cfa41c2b3910381cbba4ddcea70a97b54457 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE924 | 10908 bytes |
font_02_sfnt_off00010252.bin29d58c59d6f8b012b39fc8975f6e22d5f118d8365bbe2fb94816481d248cc495 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10252 | 17664 bytes |
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