MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It functions as a link farm, hosting numerous URLs that point to compromised WordPress upload directories, likely serving as a distribution point for further malicious content. The presence of multiple external URIs and link farm heuristics strongly suggests a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f9538851b8---39236187629.pdf
- http://hnc2.com/userfiles/file/nifufokovabi.pdf
- http://morethancars.nl/uploads/edytor/file/nisebuturofapitavakaxuf.pdf
- https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/e4e8197ab037f3a518c088c5ca0afd99/kidepamuretosiva.pdf
- https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/u1v0njt1v9vterr7kv09g3k0o8/73187840819.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083f02879d5f---kiboganopipafavifemali.pdf
- https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/63ed5b493e459b1fa6e6b668aa936844/8671476858.pdf
- https://ceccarbotosani.ro/userfiles/file/negexaxizunexibo.pdf
- http://arablift.net/userfiles/file/73413152950.pdf
- http://mosjob.ru/images/file/58284246177.pdf
- https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/b7e1892ed5a67baeda41842ffb6054e2/613973034.pdf
- https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160a71a654ccf3---kibulevon.pdf
- https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b37fad82bbd---sazalezap.pdf
- https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160974a07b6d0e---74822989441.pdf
- https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5972d4fe2---motebur.pdf
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/74f9f66eaa13ef02e1d2872e1ac56ac4/jaxum.pdf
- https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/aff93289cd7ca30ded4fae2601284e91/89839237649.pdf
- https://onhimalayas.com/ckfinder/userfiles/files/78237900543.pdf
- http://palazzodiaz.com/userfiles/files/6217202649.pdf
- https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/0aec59d1139cd475d1d54671a6b2873f/tiwivoguxiz.pdf
- http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b440cb0b305---jesisegobel.pdf
- http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b7c3c9235f6---30202358836.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=active+and+passive+voice+ks2+worksheet
- 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_off0000bc08.bin6fb18cddeb5e9435755bdf56eed36e19d75fc01b41b255be9430f8075abb6282 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC08 | 16332 bytes |
font_01_sfnt_off0000e574.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE574 | 16792 bytes |
font_02_sfnt_off0000fd8b.bin6e6659b26cd46769465ee48e445c662922965c84cf4e0f44a00e35a12b1f29b5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD8B | 10908 bytes |
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