PDF malware analysis — malicious · 35b95480f21bf863

MALICIOUS

PDF

34.2 KB Created: 2021-07-09 03:54:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 717dc4cbacb5de2da479e82abea02750 SHA-1: e566fa60ec7dd9b1326a4c69e20718fe805ad731 SHA-256: 35b95480f21bf863dbe3e77eb0d690789d2f59136861fd43db6d284013cb455d

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic firing for linking to a game hack redirector, which is a common lure for malicious content. The document body and embedded URLs reinforce this by referencing game hacks and free generators for popular games like Roblox. The primary IOC is the redirector URL, which likely leads to a malicious download or exploit.

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/jailbreak-hacks-for-roblox-game-hack PDF link annotation
- https://www.hearcolors.com.mx/img/blog/files/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/roblox-free-items-2021_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-script_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-robux-hack-pastebin_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-gift-hack_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/free-450-robux-hat_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-get-free-face-on-roblox_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/robloxlover69-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/roblox-assassin-aimbot-hack_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
- https://www.hearcolors.com.mx/img/blog/files/how-to-hack-in-roblox-prison-life_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_off00002f24.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F24	22312 bytes
SHA-256: `3b95500d6eb072af105f320bb540bc713ad72c2e89473379dccc188734733c20`
`font_01_sfnt_off000060bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60BF	19104 bytes
SHA-256: `6e39c4ba3c9b17ba9a6de9beaee503551c45453913e37f5ba526606beb27e973`

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