MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links pointing to compromised WordPress sites, which in turn host other PDF files. This structure suggests a link farm designed to obscure the ultimate destination, likely a phishing or malware distribution site. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or trojan delivery mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://cructi.ru/uplcv?utm_term=annual+report+card+comments+for+students
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b5c3711e253---bimat.pdf
- http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b56149c566a---zijaxolorefip.pdf
- https://angkoronetour.com/userfiles/file/18276235470.pdf
- https://ka-base.no/images_content/file/sipuw.pdf
- https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/5tk1ob7aekfb20kv3dligpog74/dujifiwipi.pdf
- http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d2b74138b2---10267800369.pdf
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607b212d68e21---lerojejozoxupex.pdf
- http://airconbank.com/upload/fckeditor/file/96302231852.pdf
- http://macautemple.com/userfiles/file/sapulav.pdf
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/5p9rbtpf4e96cmpn8d063au09t/98587333556.pdf
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/e966e8a349b3dffad42366d37d2ac592/96204210472.pdf
- http://rld-carbon.ru/file/resikelinoxawiromawedowij.pdf
- http://yossy.biz/userfiles/file/jitupigikere.pdf
- http://eurekaelearning.com/upload/news/file/pozodowi.pdf
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081b270912b2---vofawadowagig.pdf
- http://big-blue-bus.com/pics/fotos/1/file/65431250480.pdf
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9323d0d1ec---gubiwu.pdf
- http://wanyuantemple.tw/userfiles/file/5989124318.pdf
- http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a4772853603---tubugadixemo.pdf
- https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/f29oan54charceapdkvl1te7pm/85020991102.pdf
- https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/323add92a5e8440e5023a1b9c47c726d/jofavibusi.pdf
- https://rpitrade.com/ckfinder/userfiles/files/joluvaruv.pdf
- https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/b3d98526d7d7548a8adc8df4a4b3d642/80909197102.pdf
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/kaansvm0t8v6oc8ncf7d4a9b43/delefizeloro.pdf
- https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8e0fb0c3a---darefovaleguniverox.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_off0000edde.bin3136f7071bc840fb745613a446911952fdfa2a4bb0ebceb93a3ffde5eb934b95 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDDE | 16580 bytes |
font_01_sfnt_off000118f9.binbfc721c458dcbb10c16ca74ed01e096c842ee602cad4e0ec572dd87fe5f71b06 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118F9 | 10768 bytes |
font_02_sfnt_off000131d1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x131D1 | 16792 bytes |
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