PDF malware analysis — malicious · 6c9f51c5a198ad99

MALICIOUS

PDF

82.6 KB Created: 2020-12-25 07:41:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 53a4e20427293be566c2dddf522447c2 SHA-1: 25d8abc49734752b27c802d38985187a8626ebae SHA-256: 6c9f51c5a198ad994ceee1b7b9d380d9275d46a9c3d974ec1a27268596de2a0b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a site offering a "real bike racing game download", which is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to facilitate the download of a secondary malicious payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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://trafffi.ru/strik?utm_term=real+bike+racing+game+download PDF link annotation
- https://cdn-cms.f-static.net/uploads/4366005/normal_5f96e272f2357.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367310/normal_5f97d88c44689.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369307/normal_5f87de56945da.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392854/normal_5fa3d3cb66446.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4451561/normal_5fd08da101ad9.pdfIn PDF document text
- https://cdn.sqhk.co/bafebolabefo/ZVDPjis/plane_control_surfaces.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390641/normal_5f993a0917fa4.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/xamapebonijos/jusomo.pdfIn PDF document text
- https://s3.amazonaws.com/kisagoz/tabletop_rpg_character_sheet.pdfIn PDF document text
- https://s3.amazonaws.com/janodojivi/54677089908.pdfIn PDF document text
- https://s3.amazonaws.com/kufazete/nugufopodejomurarujel.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_off000105d1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x105D1	5384 bytes
SHA-256: `8779195acc4a753a8600b70fe5c3d9990b5e52a74d448100307251cd51bb8055`
`font_01_sfnt_off00011819.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11819	11092 bytes
SHA-256: `59d16590b72f85eeadbc786aea50698cca48e6038081c72a102fec8e7ccbe9b8`

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