PDF malware analysis — malicious · 7f07797f99a0fd33

MALICIOUS

PDF

34.5 KB Created: 2021-06-20 17:29:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 7222afe33936b0a454c1a20b9e715af4 SHA-1: 13882ecb1b41fd7a026797023bb1736df464f88d SHA-256: 7f07797f99a0fd33aecd1be395499689ae1ecd2431f2127a2e1a05a4b245427f

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.co/app/431946152/hacking-sites-for-roblox-2021-game-hack PDF link annotation
- https://www.tw-storage.com.tw/upload/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/star-wars-tycoon-in-roblox-cheats_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-redeem-code-free_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/master-coin-free-link_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/roblox-free-logo_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/roblox-script-hack_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-tricks_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/roblox-hack-lua-script_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/comment-hacker-dans-roblox_GM431946152.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
- https://www.tw-storage.com.tw/upload/files/free-spins-coin-master-cheat_GM406889139.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_off00002e3e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E3E	22536 bytes
SHA-256: `feef0ee341443968b6900d21f61ae01abd2705605149574150c5ea06cf05e8a0`
`font_01_sfnt_off00006083.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6083	19448 bytes
SHA-256: `ae61a24125b0057b1662e8020ad4d3e8c1df5b471566131198c580b2de9a5931`

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