MALICIOUS
226
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
T1059.007 JavaScript
The PDF contains numerous external links, many pointing to disposable hosting, and is flagged by heuristics for being a link farm and a browser extension installation lure. The ML classifier and ClamAV also indicate maliciousness. The embedded URLs and the heuristic findings suggest a social engineering attack designed to trick the user into downloading and executing a malicious payload disguised as a browser update or extension.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
Heuristics 7
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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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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://synerhu.ru/pbw?utm_term=papa%2527s+taco+mia+to+go+free+download PDF link annotation
- https://jakemujilofadam.weebly.com/uploads/1/3/1/3/131380171/5850629.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385876/normal_5fd10eff9f369.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4373304/normal_60aff6016f017.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365560/normal_601b6597373da.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382639/normal_6069e8afa7028.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4468259/normal_5fcff49d08eba.pdfIn PDF document text
- https://mogomanazeveka.weebly.com/uploads/1/3/0/9/130969503/zonenu-mativurid.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374521/normal_6046b8a84cbd2.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4377656/normal_5fc6dec02f676.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365553/normal_605d985bb7d56.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4493920/normal_5fe0f313bf204.pdfIn PDF document text
- https://mibudixu.weebly.com/uploads/1/3/4/4/134490534/tewes.pdfIn PDF document text
- https://lazarenebuf.weebly.com/uploads/1/3/4/8/134885148/jatibepawuv.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4472753/normal_6048034211b28.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4494893/normal_606b9c49254d9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476596/normal_602ffb8271a8c.pdfIn PDF document text
- https://zutiwemozebej.weebly.com/uploads/1/3/2/7/132712207/rutemeker-vuxaf-rubegiperi.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417644/normal_60410c9f67fc1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372384/normal_601d3302ec390.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://gazoridixilu.pbworks.com/w/file/fetch/145137078/jannat_2008_full_movie_download_mp4.pdfIn PDF document text
- http://mibegenav.pbworks.com/w/file/fetch/144446628/96438750497.pdfIn PDF document text
- http://tiduxikuve.pbworks.com/f/kurosi.pdfIn PDF document text
- http://mudowomuxexo.pbworks.com/f/geometria_y_trigonometria_baldor_descargar.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_off0000f202.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF202 | 5604 bytes |
SHA-256: b2308e3ebf90e80a4d6706fb65e752623135ab7e0e8a56398eb06a5d5c2e73bf |
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font_01_sfnt_off00010513.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10513 | 10752 bytes |
SHA-256: e7dd82a9905ac351166cb599d53a91bd4deb597141469ebbb3dedebd8be94f96 |
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