MALICIOUS
236
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Link
T1204.001 User Execution: Malicious Link
This PDF document exhibits multiple indicators of malicious intent, including being flagged by a machine learning classifier and ClamAV as a phishing trojan. The document employs social engineering tactics by luring the user to install a browser extension or update, and by instructing them to copy and paste content into a command-line context. Numerous URLs pointing to compromised WordPress sites and disposable hosting were extracted, suggesting a link farm or distribution mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 8
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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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Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LUREDocument tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://cructi.ru/uplcv?utm_term=mkv+to+mp4+converter+software+for+pc
- https://svetpoznaniyaonline.ru/wp-content/plugins/super-forms/uploads/php/files/b5f9d407865a099aca49d914c6bc7d23/wuxubuwexelo.pdf
- https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/5f44af28499d5f60d13e8640b186d5ad/56412125885.pdf
- http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c6b51d1d02c---39506479711.pdf
- https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/2cafd4be0c4e7ea55e267b57a8397679/pojajugejexowe.pdf
- http://casaperferiesantamariagoretti.com/writable/public/userfiles/file/xevodezibun.pdf
- https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/du2a3mf34nq5ddjrktssim29fg/vokugunemafem.pdf
- https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607ccb1c32f00---gakojitufizafevu.pdf
- https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/cc0723d3fcaae3f5f2fb36dc99523d04/63627751525.pdf
- http://www.abcklima.hu//data/editorfile/voxekezisosimimabik.pdf
- http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/1c9deaeed18edf4c87f00844dd4855f9/70011036098.pdf
- http://files.ibiza-ferien.de/file/83865577770.pdf
- https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6f2311e42b17087ac1eb8a1cc6019fd4/mogojelanefiwigi.pdf
- https://planet-for-events.de/userfiles/file/kukawulufupadurudexug.pdf
- http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/354062247b884c24893a93042f9c248f/gemivonuvusobasujifokajof.pdf
- http://hanboo.cn/Uploads/file/2021053121004270554.pdf
- http://amandamaitland.com/images/file/ruvemajitururanal.pdf
- http://xaydungphongphu.com/uploads/files/xorukajatim.pdf
- http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075862a3864e---sunojadup.pdf
- https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/d32d1f8d0b23d228c79444023db6e427/debopaxiviv.pdf
- https://luyenthitoeic.info/userfiles/file/83007389486.pdf
- http://foto-preiss.at/upload_files/files/96648889028.pdf
- http://losmarinoslanzarote.com/marinarubicon/admin/file/netejuvixuvu.pdf
- http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607015362d62c---88696484441.pdf
- http://afghansolar.com/userfiles/file/19605057172.pdf
- https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c368738139f---fidexewududitulogo.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_off0000f590.bina8e82d4c450717cc7f00c144800a1229bb90baf503ec74ef8c68ac86b377621c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF590 | 10820 bytes |
font_01_sfnt_off00010eaf.binf33beaa70200d014d3a5b3894531d7bfa8981afcbf1f1f0803ea66fedc01fa2a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10EAF | 17424 bytes |
font_02_sfnt_off00013c41.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C41 | 16792 bytes |
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