PDF malware analysis — malicious · 3cf83a5afcf0968a

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 06:56:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: bbc0d101526a977ca29fe00d42aaa348 SHA-1: bbd18f01035aff8a94cc38073241e2d4638531bd SHA-256: 3cf83a5afcf0968aea928b538f165e550c8e38a695b4ed49ce20fbf6d90e69f7

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 0.9980

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 http://netcdn.tw/app/406889139/free-spins-coin-master-app-ios-game-hack PDF link annotation
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/is-roblox-studio-free_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/im-hacking-on-roblox_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/robux-gratis_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/roblox-cheat-code-for-admin_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-roblox-sites_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/ways-to-get-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_002_off00003201.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3201	22720 bytes
SHA-256: `78fdce432ff2c2d4d0f790cd34a1d0899cdcca94a0db30bdfdd27d021e6ad339`
`font_01_sfnt_off000064af.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64AF	18176 bytes
SHA-256: `7a04ea1322d73f03f7683815be4e9f004787eae7d1b28008924f19d2df70de81`

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