MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The primary URL, https://ponafet.ru/strik?utm_term=nikon+d5100+firmware+update, is presented as a firmware update, a common lure for malicious activity. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a malicious site or download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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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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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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://ponafet.ru/strik?utm_term=nikon+d5100+firmware+update PDF link annotation
- https://cdn-cms.f-static.net/uploads/4470835/normal_5fdb010220469.pdfIn PDF document text
- https://zikowajemaje.weebly.com/uploads/1/3/1/6/131607239/1111054.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4461249/normal_602301a1b7537.pdfIn PDF document text
- https://teniroge.weebly.com/uploads/1/3/4/6/134693228/larebon-litukapesamu-jutepexo.pdfIn PDF document text
- https://jokilexagazoxo.weebly.com/uploads/1/3/4/6/134602179/dodori.pdfIn PDF document text
- https://fiwerabonu.weebly.com/uploads/1/3/4/3/134347662/zopujuvubime.pdfIn PDF document text
- https://bajusokizuz.weebly.com/uploads/1/3/4/4/134400974/bedesozo-baruxaga-kirodosot-wipukutizil.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403674/normal_5fe6afc529143.pdfIn PDF document text
- https://ponorevex.weebly.com/uploads/1/3/1/3/131398269/xudivedanimepibawud.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4388038/normal_5ffb753665aae.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4427103/normal_60054648cde54.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4485434/normal_602eb4455772b.pdfIn PDF document text
- https://zitavuzan.weebly.com/uploads/1/3/1/3/131379524/sawubafudisuxama.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393034/normal_5fd7d2db8ac84.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4405208/normal_5ff6c31a6804f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.opentle.orgIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/nimuwet/16506288325.pdfIn PDF document text
- https://s3.amazonaws.com/dozore/muxarabujogujuvo.pdfIn PDF document text
- https://s3.amazonaws.com/fejenijovekozu/bedawesogozefafenovas.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
- http://www.gnu.org/licenses/gpl.htmlIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e89a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE89A | 5304 bytes |
SHA-256: bbc70474bac8807326cede10445a71e5576cfa385242a630d4a32dc950a189b8 |
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font_01_sfnt_off0000fa9e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA9E | 12764 bytes |
SHA-256: 0140c8cbc5d5ef6fa80fd04d9183535802bdcacf1bbf0c7ec27e138d3d58e640 |
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font_02_sfnt_off00011e6b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E6B | 10640 bytes |
SHA-256: 32ebec5dfaa1575ca1074871dc9c44a6aec7d14f2f96e92d998e1ca4e146b343 |
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font_03_sfnt_off000142f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x142F2 | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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