MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM heuristics. The ML classifier and ClamAV also flagged this file as malicious, specifically as a phishing trojan. The embedded URLs, such as https://jottigo.ru/strik?utm_term=past+simple+irregular+verbs+exercises+pdf+beginners, are likely used to redirect users to malicious sites or download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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://jottigo.ru/strik?utm_term=past+simple+irregular+verbs+exercises+pdf+beginners PDF link annotation
- https://cdn-cms.f-static.net/uploads/4443804/normal_60464e815c977.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419412/normal_6064bb325c540.pdfIn PDF document text
- https://zijevalejo.weebly.com/uploads/1/3/4/7/134770519/giduzapedafak.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415944/normal_604113fd1622b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4462066/normal_5fee663a58c83.pdfIn PDF document text
- https://duxobibalarig.weebly.com/uploads/1/3/4/3/134360367/vetubiwa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470830/normal_6066270031c8a.pdfIn PDF document text
- https://ritobawen.weebly.com/uploads/1/3/4/4/134486043/buborut.pdfIn PDF document text
- https://kejedavozeve.weebly.com/uploads/1/3/1/4/131483662/dac6485fe9d876.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4500438/normal_60543b470589e.pdfIn PDF document text
- https://pojikajuruwasi.weebly.com/uploads/1/3/2/6/132695468/1cf539.pdfIn PDF document text
- https://xusemiwo.weebly.com/uploads/1/3/4/8/134899199/mepat.pdfIn PDF document text
- https://rimimasosonajis.weebly.com/uploads/1/3/2/6/132681992/zetanavowuwijarol.pdfIn PDF document text
- https://pimidunobesuxig.weebly.com/uploads/1/3/0/9/130970022/5290546.pdfIn PDF document text
- https://dipalowijoje.weebly.com/uploads/1/3/0/9/130969855/b5e05fa0d487.pdfIn PDF document text
- https://xanilavobug.weebly.com/uploads/1/3/5/9/135959945/3947737.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4487419/normal_6049b9f13012f.pdfIn PDF document text
- https://jowapiwinutakun.weebly.com/uploads/1/3/4/3/134365581/rajoterag.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4473645/normal_60240d428217d.pdfIn PDF document text
- https://sibovobum.weebly.com/uploads/1/3/4/8/134879451/lafagiwowafanepavabe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4500911/normal_60451470e052f.pdfIn PDF document text
- https://lafibovuvi.weebly.com/uploads/1/3/4/6/134653173/1a94e3.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001043c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1043C | 5744 bytes |
SHA-256: 2b6581d353152a38830cbdd79c63b645ff7f6505d94cfb8c25eb8d8810aa6335 |
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font_01_sfnt_off000117bd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117BD | 10536 bytes |
SHA-256: 1efa9722375ed99f4609cd17e709aa06308bd72315c1d1e4e29310919621aecf |
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