PDF malware analysis — malicious · 1547debc3a2559b6

MALICIOUS

PDF

42.5 KB Created: 2021-05-18 23:47:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: e284a1b391387b83bf0c9d04e1a26a96 SHA-1: 19d751414c2b7612a1dc22dd4c61326273b06b8c SHA-256: 1547debc3a2559b6ff5ba71ce7c442a486ac15372fbc00bbb20f3dbd50969092

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links and a lure related to 'free Robux generators' and 'game hacks'. The primary link, https://netcdn.xyz/app/431946152/free-robux-generator-without-human-verification-game-hack, is flagged as a redirector for game hacks. This suggests the document's purpose is to trick users into visiting malicious websites, likely to download malware or engage in scams. No scripts were extracted, but the heuristic firings strongly indicate a malicious redirection attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/free-robux-generator-without-human-verification-game-hack PDF link annotation
- http://www.bripi.pl/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/robux-fun-hack_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/inappropriate-roblox_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.bripi.pl/images/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/game-give-free-robux_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/robux-app_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/free-robux-giveaway_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
- http://www.bripi.pl/images/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
- http://www.bripi.pl/images/roblox-piano-hack_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/free-spin-coin-master-2021-link_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
`stream_003_off000047d4.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x47D4	25128 bytes
SHA-256: `ecfb7a875496726e7dc5bd3aeff46c1ef0b2a107488ed1e54a3f39358644166c`
`font_01_sfnt_off0000810f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x810F	19224 bytes
SHA-256: `40a7d61fbe05f3c06cc4b4f213318e5db23b17d00e7c534d307fd6e415ac6071`

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