PDF malware analysis — malicious · 17e207c4f4d1d8b5

MALICIOUS

PDF

33.6 KB Created: 2021-07-09 06:43:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 19ecc953e40da2110c73a93ec2b7c27a SHA-1: 183cf63b1cd5016ae261ec99f2ce6f4456ed3113 SHA-256: 17e207c4f4d1d8b59563915bc27a189e7b40c85c8901f24c576ce93b7b96cc45

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/431946152/robux-hack-free-robux-game-hack PDF link annotation
- https://www.99champions.com/uploaded_files/userfiles/files/roblox-free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/free-robux-boombox_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/foxy-hacks-com-roblox_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/cheat-engine-scripts-roblox_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/roblox-jailbreak-jump-hack_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/free-unblocked-roblox-games_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/counter-blox-roblox-offensive-wall-hacks-2021_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/roblox-sign-in-free_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/free-abilities-for-twisted-murderer-on-roblox_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/hack-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/get-free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/roblox-comroblox_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/ultimate-trolling-gui-roblox-hack-script_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/cheat-roblox-tuto_GM431946152.pdfIn PDF document text
- https://www.99champions.com/uploaded_files/userfiles/files/worst-client_GM479516143.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_off00002e40.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E40	21980 bytes
SHA-256: `6e7f2d9253e71a43ab46c72d6cb1758f1ceede300795c19aabd5491c0b8074e5`
`font_01_sfnt_off00005ecb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5ECB	18884 bytes
SHA-256: `28c83382703d1552e66c4ba49065192da850ec7c15b1cba66d0a11ad7ce6efaa`

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