PDF malware analysis — malicious · a49c1fc2af67aded

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 07:17:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 6edbe82f8b6614cbfe5d0f1dfc93e6fc SHA-1: 133966debe50cee130389b9b947f7bb42854108a SHA-256: a49c1fc2af67aded48e71cca2f5a4b5227607105fd7ea94a9f4d8a58af4d881e

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 0.9865

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.online/app/406889139/extra-free-spins-for-coin-master-game-hack PDF link annotation
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-strategy_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/fan-page-coin-master_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-no-email_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-microsoft_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_004_off00005297.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5297	25288 bytes
SHA-256: `0d47fdd5e116450ca46090870510b43d007bf0a30347fbcebaa30687967ec64f`
`font_01_sfnt_off00008d18.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D18	18096 bytes
SHA-256: `96bd0bb09572b3bddfd838baa4c331de3f827c8f9b81fb8d0ba3a71af1e92560`

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