MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links on disposable domains, a common tactic for phishing or distributing further malware. While no scripts were explicitly extracted, the presence of external URIs and the nature of the link farm heuristic point towards the document facilitating malicious redirects.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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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LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMANDExtracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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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 http://flex-link.cn/uploadfiles/files/92051929017.pdf In PDF document text
- http://files.ibiza-ferien.de/file/xozudolizexekupumaro.pdfIn PDF document text
- http://wsospice.org/uploads/userfiles/file/file/mijozavokafekakujuzexu.pdfIn PDF document text
- https://resttour.com/images/userfiles/files/16748522571.pdfIn PDF document text
- http://ippinnudon.com/uploads/files/fisesugivuvosima.pdfIn PDF document text
- https://noventa.cz/media/files/file/12981950911.pdfIn PDF document text
- http://tuanlongland.com/upload/files/57762491625.pdfIn PDF document text
- https://petroservice-eg.com/userfiles/file/85082870893.pdfIn PDF document text
- https://yomadesign.com/userfiles/Proj_Name/files/23883608096.pdfIn PDF document text
- http://qdcmd.com/data/files/45891335413.pdfIn PDF document text
- https://classoft.ro/userfiles/file/53696913778.pdfIn PDF document text
- http://sk-uralstroy.ru/uploads/files/bolirijimuver.pdfIn macro / runtime command snippet
- http://cuacuonductudong.com/upload/files/sisapeve.pdfIn macro / runtime command snippet
- http://ventilatoryzlin.cz/images/file/wufegimin.pdfIn PDF document text
- https://majubesar.net/contents/files/fiwanoboxogojupujawezev.pdfIn PDF document text
- http://turagent007.ru/userfiles/file/xibuz.pdfIn PDF document text
- https://isagrinio.gr/userfiles/zuzamosipemibiva.pdfIn PDF document text
- https://qian-ho.com/upfiles/editor/files/57056102471.pdfIn PDF document text
- http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/f302364fa41db835f1cd6c4a2def4fec/33320429231.pdfIn PDF document text
- http://tupnate.com/ckfinder/userfiles/files/62399527569.pdfIn PDF document text
- http://www.77ice.com/upload/files/xibakimuruziwutudobo.pdfIn PDF document text
- http://auswallendorf.de/userfiles/file/19109227814.pdfIn PDF document text
- https://classoft.ro/userfIn macro / runtime command snippet
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=virtual+tennis+challenge+apkPDF link annotation
- 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_off0000b51d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB51D | 18676 bytes |
SHA-256: 5cd0a53cacf4a624fcc0273ae556e3f4ef58073ad7aed4dd2d45b458af066788 |
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font_01_sfnt_off0000e4f8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4F8 | 10692 bytes |
SHA-256: 90b338e6f2e437d762f1fed690580cdf9498fbc5de8c2a680ed95fadd997dd86 |
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font_02_sfnt_off0000fd79.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD79 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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