PDF malware analysis — malicious · efced95b8a3f0581

MALICIOUS

PDF

41.3 KB Created: 2021-05-12 10:36:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 06071e8e1ee775c869d9d0c5767d02be SHA-1: 9d28cbe7c06babd6df1b3237754a3a82cd6a261a SHA-256: efced95b8a3f0581c170fcef80a029e96433fa1a1ccedcebafdd87f3904ff4e3

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/oprewards-login-game-hack PDF link annotation
- https://ethraa.ae/userfiles/files/coins-master_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/free-robux-live_GM431946152.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
- https://ethraa.ae/userfiles/files/games-that-give-free-robux_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_off000045da.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x45DA	24920 bytes
SHA-256: `891a3315f30774d576d02d19b421b7932ec78ec0f918269f36c89a87bc5d6e60`
`font_01_sfnt_off00007e2b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E2B	18492 bytes
SHA-256: `81eae8079694c842f573892a7bdeb7507755234d7d643456fdd469df9fa7c23d`

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