MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with numerous URLs pointing to potentially compromised or disposable hosting. The document body is heavily obfuscated, suggesting an attempt to hide its true nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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 http://zjleiou.com/images/upload/File/kalemedobuvufuro.pdf In PDF document text
- http://xn----7sbab1bcaqplb0ccyi9d.xn--p1ai/files/file/mexinasube.pdfIn PDF document text
- http://rosg.net/sa_upload/userfiles/file/20210925093227.pdfIn PDF document text
- http://alnadaoil.com/userfiles/file/9165726518.pdfIn PDF document text
- https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/up1vashuqg2vpbskliavmrkk50/pukomisoxebefetowenal.pdfIn PDF document text
- https://traffictkt.com/viking1/uploads/files/94084996987.pdfIn PDF document text
- https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/191cf3a089058e438c11bb543e88c2e8/37421457128.pdfIn PDF document text
- https://leo.tw/upload/ckeditor/files/36297527270.pdfIn PDF document text
- https://innovativallatgyogyszer.hu/fileok/file/64640881725.pdfIn PDF document text
- https://h1t-url12shio-turbo.com/contents/files/98724807102.pdfIn PDF document text
- https://ppntassone.it/dati/upload/file/17428816564.pdfIn PDF document text
- https://chinese-wall.tw/upload/files/62066114025.pdfIn PDF document text
- http://brenna-ski.pl/userfiles/file/gurivawerobuluwez.pdfIn PDF document text
- https://indicaperu.com/userfiles/file/32812229850.pdfIn PDF document text
- http://liebherr-tr.com/userfiles/file/nizonixopafatasexirumoso.pdfIn PDF document text
- http://njbeihang.com/uploadfile/file///2021091520435740.pdfIn PDF document text
- http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1614fc3f74ddfa---batevurikasimovagas.pdfIn PDF document text
- http://emilygrilltogo.com/uploads/files/56778477102.pdfIn PDF document text
- http://zussobrance.sk/grafika/dokumenty/kafekekituxegen.pdfIn PDF document text
- https://xn--q3cceuw0c6ab0d2ii.com/upload_file/files/mavikegoriziziki.pdfIn PDF document text
- http://wuyioutdoor.com/userfiles/file/bifuvubudosusubimagobom.pdfIn PDF document text
- https://ratoempat.com/contents/files/73069087271.pdfIn PDF document text
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613673119174d---86786289080.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=the+crown+putlockerPDF 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_off0000bcf5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBCF5 | 18252 bytes |
SHA-256: be5074fd6f1a1cc730ab92ea2ad5afd7139a11efc6815dda27b8c5f678f391c8 |
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font_01_sfnt_off0000ecb4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECB4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000104cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104CB | 10288 bytes |
SHA-256: c5407a9d7a45f77cc742f004ddf49c84fc1f1b3268bc0c21a97378d6ee618b74 |
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