MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous embedded URLs that point to compromised websites. These sites, in turn, host further PDF files, suggesting a multi-stage attack designed to lead the user to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
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://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/305637babe6bf6b75fa916c9ea0f8dd0/67017844468.pdf
- https://too.kg/wp-content/plugins/super-forms/uploads/php/files/3ab7b58eb161ef1c0858a4f1ca0b99c6/76382082790.pdf
- https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/g4cg7rd1d2bo350eiihh8lk530/waxonevodutus.pdf
- http://gat-asset.com/CKEdit/upload/files/nebamobaxumotisepaxixer.pdf
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/em447mfi83flg5bmcqdvpop0v8/kilukotidemizug.pdf
- https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/25f035ecb4a89505ce7de00de4ba7f0a/33423757978.pdf
- https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/0cc51255743be4ff7ceae5bb70e82234/lotexelalomafev.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609091ba4822b---32706065109.pdf
- http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b83636adb61---xisudenop.pdf
- http://naturallabs.fr/userfiles/file/gurubenuko.pdf
- https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/ob0hqe2ji8tn6ese8i8u0gj6k0/39563888823.pdf
- https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/8c968c2af776daf7fe62c7121471c6d2/gevubopuxozejaniti.pdf
- https://observatoire-omic.org/documents/file/36613573287.pdf
- https://intrigantka.ru/images/userfiles/file/51583060992.pdf
- https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad89634cb2c---poguto.pdf
- https://too.kg/wp-content/plugins/super-forms/uploads/php/files/da1691a3079b2664020063c600c7d036/tofapisuxojubemorasiwufax.pdf
- https://xo-sound.ru/userfiles/file/tonizodoxixuze.pdf
- http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d797e6adbc---16460344323.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=even+number+definition+with+example
- 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_off0000ba80.bin3e58c160acbf4d87be36768acf504ee96defebac796210920a791543f270cb4e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA80 | 18108 bytes |
font_01_sfnt_off0000e9e3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9E3 | 16792 bytes |
font_02_sfnt_off000101fa.bineacea6fc0e91329127bab5fb3d44a778d6fd8b0684e496ac36bacbbd14afb3c2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x101FA | 11072 bytes |
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