MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, with numerous external URIs. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and URL analysis suggest an attempt to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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://laborke.ru/uplcv?utm_term=helen+fisher%27s+personality+test
- https://liniagdanskzydowo.pl/files/72821520599.pdf
- https://hagakure.by/upload/editor/files/37605439613.pdf
- http://vds-construct.pl/userfiles/file/nafufetikodovaxoselusezo.pdf
- http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160862117c1dff---bazisutijefajuzolofor.pdf
- https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/95862163456.pdf
- http://thebestpearsonfamily.com/clients/e/e6/e6a49a9b6fa3fb0349b1957bd02e8b5b/File/36853844618.pdf
- http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a97e7bd1fff---1549384599.pdf
- https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/6235522e71f0bbcb986ab182ace28d91/zusisedo.pdf
- http://timeyear-v.com/userfiles/file/60060693150.pdf
- http://nhasachnguyenvancu.com/Images_upload/files/71824410285.pdf
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/00c7a2fbfd4f51bcc73147761c20cf0d/66947862871.pdf
- https://chrmglobal.com/userfiles/file/zamewisekusif.pdf
- http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160899f8068a8b---89754712205.pdf
- https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/d4c587b70c870997d8e52b53febdbf8a/zivajoxafebal.pdf
- https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/bf32fc37afd2e5558fada385eac33a55/16527972619.pdf
- https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16086ab5a64bf7---95052597585.pdf
- http://arunimaflavours.com/userfiles/file/fuxebitexugimujipikif.pdf
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4c6a301af7---31192042992.pdf
- https://adlinefor.com/home/webagen/public_html/korn/data/file/jojujotijivutemawazafebuj.pdf
- http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/zisexa.pdf
- http://royalgoodviewresort.com/Uploads/file/nodarobuwajif.pdf
- http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16074ac7a1b4b8---32362500293.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_off0000eecb.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEECB | 16792 bytes |
font_01_sfnt_off000106dd.bin7ccfa92f8447f1c5aa09f264b97b078aa0ef8ef7ec9624cc796ab17deebdc3a0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106DD | 16876 bytes |
font_02_sfnt_off00013328.bin766eeda8917e578e22bf08c6e8ed2304b8154bd17f4a9682fd46398eb976363e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13328 | 10592 bytes |
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