MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection for phishing and trojan activity. The document contains numerous embedded URLs pointing to compromised websites and disposable hosting, indicating it functions as a link farm. The primary goal appears to be directing users to malicious sites, likely for phishing or further malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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://huntic.ru/uplcv?utm_term=design+and+analysis+of+algorithms+solutions
- http://f-okinawa.com/img/tmp/file/38182941500.pdf
- https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/5be831de1e9349068d736ab092b0c4b6/didosafolovadedakivegota.pdf
- http://itemclinicchina.com/ckupload/files/36286937807.pdf
- https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/99590407e8c38c9989967b95a631d88a/gedolega.pdf
- https://dacinsara.ro/fckfiles/file/givolox.pdf
- http://www.pes.edu.mn/ckfinder/userfiles/files/2683069365.pdf
- http://hingliltd.com/userfiles/vexikitijusojanigiw.pdf
- http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/161382deedcf13---lepozusopinopewesokidameg.pdf
- http://dakdekkersindex.nl/images/uploads/ruvuvevoba.pdf
- http://gysanya.com/upload/file/210908124225666072zgr0zwrn1hx2.pdf
- http://terremeraude.com/userfiles/file/56273761701.pdf
- http://restaurant-lyons.fr/userfiles/file/zigewagigateri.pdf
- https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/7d487fe4c055384cdae4ece73fef1ee6/34192274623.pdf
- http://ebus.cn/up_file/file/13441879901.pdf
- http://satit.nrru.ac.th/satit/_Adminis/ckfinder/userfiles/files/totozulowijebopojevado.pdf
- http://taiwangallant.com/uploads/files/202109010138427093.pdf
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/a0b4550bc2fa7c53b3806fa6573b4af6/libagizegaze.pdf
- https://www.abrasco.org.br/ckfinder/userfiles/files/59289123242.pdf
- http://kvbm.org/pds/userfiles/files/lovubisuzorala.pdf
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/161304bf34d1a0---figibotowewe.pdf
- https://alpinashop.rudy-ra.com/files/9274709383.pdf
- http://www.anieliasfx.com/uploads/textareas/file/gadusodulikulegeb.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_off0000e3c9.bin12b9909d05768cedfc1598f1cd77c9aad1dc9a9c1bbc0fab111d738e1f3718a7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3C9 | 11016 bytes |
font_01_sfnt_off0000fd10.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD10 | 16792 bytes |
font_02_sfnt_off00011522.bin2c73026b75d3220a11a9b2e68429c36c47965169f845a2a17a0f6a780da984f5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11522 | 18364 bytes |
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