PDF malware analysis — malicious · d0b5d4dd44578da1

MALICIOUS

PDF

34.6 KB Created: 2021-07-08 11:58:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02

MD5: c48c8c73b467e4a3c62241330e3ba7bf SHA-1: 7a6ed8d6011830aa435ff46450a94e3705565258 SHA-256: d0b5d4dd44578da1be42e3f8fb125a2a63410266ccfa78994a932e746e970a1b

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
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.tw/app/406889139/get-2021-free-spins-on-coin-master-game-hack PDF link annotation
- https://www.donjastubica.hr/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/baby-simulator-hack-roblox_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/how-to-hack-roblox-2021-august_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
- http://www.donjastubica.hr/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- http://www.donjastubica.hr/files/2021-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.donjastubica.hr/files/roblox-free-robux-hack-2021-generator-cheat_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/roblox-reason-2-die-hack_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/roblox-games-that-i-can-play-for-free_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/how-to-hack-peoples-accounts-on-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
- http://www.donjastubica.hr/files/roblox-hack-v414_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
- http://www.donjastubica.hr/files/can-i-have-robux_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/how-to-wins-free-robux_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/how-to-make-robux_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/roblox-cheat-engine-61-money-hack_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_off0000309a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x309A	22776 bytes
SHA-256: `a5b0b5d05eb74b2fe37bc577b3ac920418f2eb5dfb4d28d1739667ebe9dc7878`
`font_01_sfnt_off000063c0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63C0	18576 bytes
SHA-256: `4e53ac7832aa535c4e7ecdb539be5c5de29bf4c01f620500064f2fc2c4f2608d`

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