MALICIOUS
276
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document employs social engineering tactics by impersonating Office 365 to trick users into installing a browser extension or update. The document contains numerous links to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for credential harvesting or further payload delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
Heuristics 9
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISHDocument impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=endnote+x8+word.
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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://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160daacdbdbf08---68599413667.pdf In PDF document text
- https://cncunse.com/d/files/zowuvefejagotadi.pdfIn PDF document text
- http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/160af72323820d---51835619494.pdfIn PDF document text
- http://longarmquiltacademy.net/fckeditor/userfiles/file/84211759155.pdfIn PDF document text
- https://srmhospitalities.com/images/bulk_images/files/97388527649.pdfIn PDF document text
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/3930c1cf6076c66ec4fb4ca548e0eb5a/86218152440.pdfIn PDF document text
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/ssoecb1bhfriv8mtr2ajgkm315/94354047263.pdfIn PDF document text
- https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160716fd08e113---26695056320.pdfIn PDF document text
- https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c6c50f601d5---jalevaludut.pdfIn PDF document text
- http://almar-bus.pl/userfiles/file/78388938945.pdfIn PDF document text
- http://willbramephotography.com/18706288667.pdfIn PDF document text
- https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/pcb08ci59mv14gqf93in2mp0q5/4997213185.pdfIn PDF document text
- https://firsatoyun.com/calisma2/files/uploads/zirebimisunikawumipu.pdfIn PDF document text
- http://halaljones.com/uploads/files/xemazisazotokasu.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076036a3ea63---90976340817.pdfIn PDF document text
- http://upoart.com/ckfinder/userfiles/files/malaluwozimipulapenasuwe.pdfIn PDF document text
- https://muguet.fr/sites/default/files/file/gogoxusibixosotepom.pdfIn PDF document text
- https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/6fc422c4758b7b6464df2446b176639d/7870457871.pdfIn PDF document text
- https://southernlightingsource.com/wp-content/plugins/super-forms/uploads/php/files/534ccf63b160c0d9ba12d9160f3c445b/lunixonufumusi.pdfIn PDF document text
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608420ea144ed---28017765442.pdfIn PDF document text
- https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/6b544a759972c65a2eecf33b465315f3/donovebotimudosalu.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=endnote+x8+wordPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dc39.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC39 | 18216 bytes |
SHA-256: 1ba8cec0545146203d860c6f6429178da0502ffbf319c9ac33eaacd3adf0573a |
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font_01_sfnt_off00010b8e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B8E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000123a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123A5 | 10152 bytes |
SHA-256: 07e3b4da3f202ed8f733f000eb390294c134f10b0b78d86dcf743347d022f120 |
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