MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous embedded URLs that point to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated, but the presence of external URIs and link farm heuristics strongly suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9935
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://crewmak.ru/uplcv?utm_term=how+many+calories+in+a+cup+of+cooked+jasmine+rice
- http://zuche0551.com/upload/file/47367441964.pdf
- https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/e6e7f9b9500a7cb112043a859b29942e/89701436892.pdf
- http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/16094c20709be9---juzamitawiduvofos.pdf
- http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607844c41e8f0---magofawudidenujaperu.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be6ca80b2f5---vekizivepegupopuseruzepam.pdf
- http://www.bash.cl/media/file/tiguzo.pdf
- https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce45625a97---39484541237.pdf
- http://detikakdeti.ru/img/file/lewiraz.pdf
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160b17fdb0671a---tutinig.pdf
- http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/toci1ne2j2palp59n9phki6d9j/rojew.pdf
- https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd82a205f3---18604244124.pdf
- http://hongshengfish.com/uploadfiles/20210523/2105230953146778552kt73yt8i34o.pdf
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3f8fa91991---gifelikexosenolumugo.pdf
- http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/b1a6898ce9911effba3e79fce11d0bf4/66824101033.pdf
- https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/st4je27o2n3ean8fuiu723oii6/pirabipozaruxibiz.pdf
- https://grandhotelbulgaria.com/userfiles/file/37633686527.pdf
- https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/1ng5ll0itsjq3l81ihjk02kdbh/16584533172.pdf
- https://educhina.mn/editor/files/91107633332.pdf
- http://519pf.com/userfiles/files/mikepugumapat.pdf
- http://amuseonline.com/absite/userfiles/file/rulugojilimesezatibami.pdf
- http://furniture83.com/upload/files/47788382536.pdf
- http://cropscipublisher.com/files/upfiles/file/45540389327.pdf
- https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea8ff9553c---43030559099.pdf
- https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/3a68628d7b592a444137e8fd08d951bc/71970077353.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_off00010b08.bin0260c990e99172773c2fcd86731d59dc1dae6c9cda7af1f0ee05ae45f2dd7b24 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B08 | 18704 bytes |
font_01_sfnt_off00013c4f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C4F | 16792 bytes |
font_02_sfnt_off00015466.bin8ab5206800bb413ee7c53271fb15e404a4f8d47691fe2e2b5624061763249535 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15466 | 11196 bytes |
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