MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and unreadable, but the heuristic firings strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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://chcial.ru/uplcv?utm_term=pdfbox+html+to+pdf+example PDF link annotation
- https://thegmsbihta.in/userfiles/file/87077266405.pdfIn PDF document text
- http://associatedreclaimed.com/userfiles/files/59284366240.pdfIn PDF document text
- http://studiorumeo.it/userfiles/files/10857645561.pdfIn PDF document text
- https://lacausedeslivres.com/userfiles/file/83302881761.pdfIn PDF document text
- http://hersheyhigh1981.com/clients/37302/File/41529186886.pdfIn PDF document text
- https://sasalidayanisma.org/uploads/file/99069679690.pdfIn PDF document text
- https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16076de8a44206---liwosuxakevefi.pdfIn PDF document text
- https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/sn1fq26b2raafsb46q3nponrk5/kixuzoz.pdfIn PDF document text
- http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608491b74f4d5---bopegovowutiligad.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/h2qj0gf9kr90bnor3deb21ifj4/75824101328.pdfIn PDF document text
- https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607905065b889---gutesanixakaz.pdfIn PDF document text
- http://biancoacolori.it/userfiles/files/95563359474.pdfIn PDF document text
- http://sns.hu/_user/file/50242193045.pdfIn PDF document text
- https://247hvac.ca/fabulous1/uploads/files/nababakuxivapa.pdfIn PDF document text
- http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2d894321c8---giwanu.pdfIn PDF document text
- https://noticky.net/akce/fotky/file/76393465604.pdfIn PDF document text
- http://csa.china-led.net/static/editor/ckeditor/ckfinder/upfile/files/vuvorovowufogivavazije.pdfIn PDF document text
- https://nomortiga.com/contents//files/26069532845.pdfIn PDF document text
- https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/160765933e8f8b---nubugidejenudeduga.pdfIn PDF document text
- https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/49d0d44acfcf505f70ba57f2159342b5/laxedexepisepalati.pdfIn PDF document text
- http://juha.be/_files/file/dusuw.pdfIn PDF document text
- https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/6398bf493c674f2f64558ff62127d0f8/30419335144.pdfIn PDF document text
- 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_off0000d2e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD2E7 | 10540 bytes |
SHA-256: d9e426a84fe0ca17af40b99c000040a62f4397fd223f658c4c502fb8d2ae64eb |
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font_01_sfnt_off0000eab5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAB5 | 18256 bytes |
SHA-256: c47b78827dd4410560f38f19e247b947da8038eefd9a6b3e13802450ddb235d5 |
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font_02_sfnt_off00011a7b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A7B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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