PDF malware analysis — malicious · a3f731e5b5481f67

MALICIOUS

PDF

34.1 KB Created: 2021-06-27 23:47:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: a1cccca4f967f4c7e0200fa77f3f6d43 SHA-1: 5f1033333608d1562c1f87c768b67e418b7d8606 SHA-256: a3f731e5b5481f67f5812b952436da98fab029e1f4c0f66534dd0a76df294ce4

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document exhibits characteristics of a credential phishing or malware distribution lure, impersonating Microsoft to trick users into downloading potentially harmful files. The embedded URL http://netcdn.co/app/431946152/redline-cheat-roblox-game-hack is presented as a download for game cheats, which is a common pretext for distributing malware. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a high-risk attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/redline-cheat-roblox-game-hack.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
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 http://netcdn.co/app/431946152/redline-cheat-roblox-game-hack PDF link annotation
- https://khavarrooy.com/assets/uploads/pages/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/free-roblox-exploits_GM431946152.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/how-to-get-free-t-shirts-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/abd-roblox_GM431946152.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/how-to-hack-roblox-points_GM431946152.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/roblox-controversy_GM431946152.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/free-robux-no-email_GM431946152.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/wild-and-free-id-roblox-code_GM431946152.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/descargar-hack-para-mad-city-roblox_GM431946152.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
- https://khavarrooy.com/assets/uploads/pages/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00002f9f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F9F	21936 bytes
SHA-256: `5930d1cb5d89c6914ca6a60ad6af4106165bc36380482ec8d4821bcecee986f5`
`font_01_sfnt_off00006005.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6005	19048 bytes
SHA-256: `c8059e61a8d5fb43dda4533754c59eb2e15da4f408db4d7f75d47890420b5534`

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