MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is identified as malicious by ClamAV and an ML classifier, with heuristics indicating embedded JavaScript and a link farm pointing to compromised CMS uploads. The PDF likely exploits a vulnerability to execute JavaScript, which in turn redirects the user to one of the numerous URLs, many hosted on compromised or disposable domains, to further a phishing or malware distribution scheme. The presence of embedded JavaScript suggests an attempt to download and execute a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9988
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://queure.ru/uplcv?utm_term=world+history+in+minutes+pdf PDF link annotation
- https://highlander-inn.com/assets/userfiles/files/18437483797.pdfIn PDF document text
- http://bscartridge.com/pic/51613631938.pdfIn PDF document text
- https://hondamienbac.vn/userfiles/file/35910827957.pdfIn PDF document text
- http://vietdubai.com/userfiles/file/muwuzivanajebugazuruzatu.pdfIn PDF document text
- https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160e33da53f015---fupotonoxomunazuxi.pdfIn PDF document text
- http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/2df2h9rct7se0c8h70h6r4kv97/seluredobukozaf.pdfIn PDF document text
- https://twinslock.com/ckfinder/userfiles/files/59857379091.pdfIn PDF document text
- https://varbackaforskola.se/ckfinder/userfiles/files/23306363728.pdfIn PDF document text
- http://kmsenior.org/file/files/13273408157.pdfIn PDF document text
- http://dok-vo.ru/userfiles/file/sexerazi.pdfIn PDF document text
- http://huzatfokozo.hu/editor_up/51404493665.pdfIn PDF document text
- https://istanajp.net/contents/files/64215904079.pdfIn PDF document text
- http://elosc.com/upFile/file///ITX202107241344294077.pdfIn PDF document text
- http://clearspace-design.com/CKEdit/upload/files/todirujemupunobonubat.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/58adef22542767ce3bd0704e6f0a674a/19413105503.pdfIn PDF document text
- http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/4527093092.pdfIn PDF document text
- http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/03ba5f58dcea25d3bd9579b91673c05c/97415092232.pdfIn PDF document text
- https://roc.mn/uploads/files/39481117926.pdfIn PDF document text
- http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609beb322a665---17165079025.pdfIn PDF document text
- https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160985bf523eb8---gazenemipofeposeku.pdfIn PDF document text
- http://residenceraffaellotorino.com/userfiles/files/tunojutulex.pdfIn PDF document text
- https://topinsolventa.ro/userfiles/file/70934622082.pdfIn PDF document text
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608b10788d8f6---75498692530.pdfIn PDF document text
- http://www.leads-bd.org/app/webroot/js/ckfinder/userfiles/files/tawimurarezububozeravu.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_off00010df6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DF6 | 10808 bytes |
SHA-256: 858d55b2d0bb5815b1df3cbb240ee15f85ed3b339bed2edd01a26d2b08da10f8 |
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font_01_sfnt_off000126b5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126B5 | 19052 bytes |
SHA-256: 17fa10e027fb45a4ccd69e5dab5ae675480fcb4eade5e8de8aad717c7f262fec |
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font_02_sfnt_off000157ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x157AE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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