PDF malware analysis — malicious · 5a715a5f20648c53

MALICIOUS

PDF

37.6 KB Created: 2021-07-09 21:02:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 7c2af6e96954579fac6fdbb36516e15f SHA-1: a0b6934e110a53f39d7986be85cc429c12938d19 SHA-256: 5a715a5f20648c53d8ca027f62a6cf69ee3d6698f90cfd73b89f8e5c568c0def

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free currency, directing users to the malicious URL http://netcdn.tw/app/431946152/robux-hack-me-game-hack. This URL is likely used to download and execute a second-stage payload. The ML classifier also flagged this PDF as malicious with high confidence.

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/431946152/robux-hack-me-game-hack PDF link annotation
- https://www.ferraroni.net/public/risorse/ck/files/coin-master-levels_GM406889139.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/hack-roblox-sans-verification-humaine_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/coin-master-hack-extension_GM406889139.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/hack-de-coin-master_GM406889139.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/free-free-robux_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/how-to-hack-coin-master-pc_GM406889139.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/robux-today_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/roblox-blockburg-money-hack-penquin-script_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/free-roblox-accounts-may-2021_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/roblox-lego-hacking_GM431946152.pdfIn PDF document text
- https://www.ferraroni.net/public/risorse/ck/files/mobile4free24-free-robux_GM431946152.pdfIn PDF document text
- https://www.roblox.com/.IIn 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_off00003cf2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3CF2	22424 bytes
SHA-256: `8628bae44bd9f009b9164d80c6d5e2f8bc0fa95e4b67a09315d506f59779ec77`
`font_01_sfnt_off00006ea5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6EA5	18916 bytes
SHA-256: `d49e1575892b00f4a4e8cdcd45bcc6284cddefc71d3a5758140a1c9b54c8cd26`

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