MALICIOUS
254
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
The PDF contains embedded JavaScript and a large number of external links, many pointing to disposable hosting, indicating a link farm designed to redirect users. The 'Browser extension / update installation lure' heuristic strongly suggests a social engineering tactic to trick users into installing malicious software or divulging credentials. The ClamAV detection further confirms its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 9
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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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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://druttle.ru/123?utm_term=leigh+dovetail+jig+accessories PDF link annotation
- https://cdn-cms.f-static.net/uploads/4464311/normal_5fdb0d323e0b8.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4446635/normal_60005620ebb56.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412762/normal_5fe63f2f672d8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366359/normal_6010b6862d091.pdfIn PDF document text
- http://kirakexig.mypressonline.com/twilight_breaking_dawn_part_2_full_movie_download_in_hindi_filmyzilla.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366364/normal_5fd268021cf6e.pdfIn PDF document text
- https://judenebubiz.weebly.com/uploads/1/3/4/6/134656374/7478432.pdfIn PDF document text
- http://jazajozem.iblogger.org/xanikuvipo.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4450355/normal_5fdfafdb11e15.pdfIn PDF document text
- https://vadizomozizi.weebly.com/uploads/1/3/5/4/135400682/9845971.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4475380/normal_6017aef6a12d2.pdfIn PDF document text
- https://pazibeze.weebly.com/uploads/1/3/1/6/131636707/rudun.pdfIn PDF document text
- https://wopixidotawus.weebly.com/uploads/1/3/4/5/134506387/c8e0ff0a.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/rebomedug/8197407811.pdfIn PDF document text
- https://s3.amazonaws.com/wunojipu/38377099218.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dfaa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFAA | 5280 bytes |
SHA-256: 974048e4bacb7433d9e2bbe2339988ce9a8567577358021cfef09325240e42af |
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font_01_sfnt_off0000f1a8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1A8 | 11376 bytes |
SHA-256: 8bf6cd7f3b788f081f5ec81ed29604f903636089d907bde7223ffb1178d8d3dc |
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