PDF malware analysis — malicious · 4f0508110e269e4d

MALICIOUS

PDF

42.5 KB Created: 2021-05-11 21:00:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 0e9b3bc254807d912f32521b1c5e3ca7 SHA-1: 1ac788f4f8f46e2af396b0eb59d52514549377bf SHA-256: 4f0508110e269e4de57db5b0e7f59a32652e65ae4d1a02e0578486f5e28e8dbc

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 0.9971

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-without-verification-game-hack PDF link annotation
- https://www.fishboat.hr/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.fishboat.hr/files/free-robux-scams_GM431946152.pdfIn PDF document text
- https://www.fishboat.hr/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
- https://www.fishboat.hr/files/real-robux_GM431946152.pdfIn PDF document text
- https://www.fishboat.hr/files/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
- http://fishboat.hr/files/apk-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.fishboat.hr/files/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
- http://fishboat.hr/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
- http://fishboat.hr/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
- https://www.fishboat.hr/files/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
- https://www.fishboat.hr/files/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
- http://fishboat.hr/files/robux-offer-wall_GM431946152.pdfIn PDF document text
- https://www.fishboat.hr/files/free-games-like-coin-master_GM406889139.pdfIn PDF document text
- http://fishboat.hr/files/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
- http://fishboat.hr/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
- https://www.fishboat.hr/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
- http://fishboat.hr/files/krnl-roblox_GM431946152.pdfIn PDF document text
- http://fishboat.hr/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.fishboat.hr/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
- http://fishboat.hr/files/roblox-hacked-com-2021_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
`stream_003_off00004975.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4975	25288 bytes
SHA-256: `b97d2a1051fbb046e142ad0928cd74f5ffdeabf970487c724038a460ede10387`
`font_01_sfnt_off000081e0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81E0	18964 bytes
SHA-256: `5864977637737ef4e1bd5b7bfc66e5602b8aa3d3ed60f74fb5f96fd63c3aa8ef`

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