PDF malware analysis — malicious · fb7bcf2546798ea6

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 02:34:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 06a0c75b429f12855748acb5071594b9 SHA-1: 2bb047d7e479ad8977288cd5313453a7ff2dae82 SHA-256: fb7bcf2546798ea6899f29d1d24988944437e34354f561881ed9c0af6bb2e05c

90 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and links to external URLs that are identified as game hack lures. The document body explicitly mentions 'Coin Master Hack Apk Download' and provides a URL that likely leads to a malicious download or further redirection. The presence of embedded JavaScript suggests an attempt to execute code, potentially to download a second-stage payload or exploit vulnerabilities.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 5

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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/406889139/coin-master-hack-apk-download-for-android-game-hack PDF link annotation
- https://cheryco.ir/assets/public/js/uploading/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/free-roblox-download-for-chromebook_GM431946152.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/hacks-para-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/gta-5-hack-roblox_GM431946152.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/free-robux-working_GM431946152.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/is-hacking-on-roblox-illegal_GM431946152.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/free-minecraft-capes_GM479516143.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/roblox-cheat-nocliping_GM431946152.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://cheryco.ir/assets/public/js/uploading/files/how-to-get-robux-for-free-instantly_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_002_off00002faf.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2FAF	23068 bytes
SHA-256: `dc6b69347ea16e37e66312e7e8d2ae8fc901a0074df981be593a92b7c2daca48`
`font_01_sfnt_off00006399.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6399	18924 bytes
SHA-256: `1cf9981fa265b31f69f9f07c7993afa1bce844b0d5c7655559eae79f3315a78a`

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