PDF malware analysis — malicious · 4ed60f9a8a693f50

MALICIOUS

PDF

35.1 KB Created: 2021-07-07 13:28:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: bdda328dbe8357f9794df7de0e0c6da6 SHA-1: 13a29fb7a1d84f1760600bbc775868d293e2e46d SHA-256: 4ed60f9a8a693f502afdb10cf7f389406353ba793a69bca23694e3a40e964c70

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/479516143/minecraft-free-download-windows-10-game-hack PDF link annotation
- https://www.skygan.com/uploaded_files/userfiles/files/free-dominus-roblox_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/como-hackear-roblox-com-cheat-engine_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/ok-google-free-roblox_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-free-robux-for-android_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/roblox-com-free-play_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/best-robux-hack-ever_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/robux-cheats-2021_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/hack-speed-roblox-pc_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/how-to-use-cheat-engine-on-roblox-undetected_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/robux-com-free_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-executor-roblox_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/hack-system-for-roblox_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_off00003157.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3157	22992 bytes
SHA-256: `0b40d92630a3a726edf4050e6bdc0dcd3b98c3657a3244cb2754f2ea99c73cda`
`font_01_sfnt_off00006406.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6406	19056 bytes
SHA-256: `a204aa6cbe114819a22d8bb9e9addc39de0900fe99e8aa3612fe51afc3ec244e`

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