PDF malware analysis — malicious · e00f4baf23a3dec0

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 10:52:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: fd6f3d8f5f5f480521881ada901f6241 SHA-1: a7b68bdb84d1139e7ead9ff77625f7a3f3ee8280 SHA-256: e00f4baf23a3dec0f471b62980141bcfd4d5ce4da63b7c75f04de68d8e2ef0e9

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.co/app/431946152/how-to-get-free-robux-fast-game-hack PDF link annotation
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/robux-withdraw_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-roblox-noob-accounts_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-robux-and-premuim_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/robux-in_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/ccv-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/i-want-free-robux_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/roblox40com-robux_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-hack-account_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-minecraft-coins_GM479516143.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-2021-free-spins-link-2021_GM406889139.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
`font_00_sfnt_off00003031.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3031	22532 bytes
SHA-256: `27c887f077ae4e37e3732bff78e44341de1ef083330dc57a351562d9c435c1ca`
`font_01_sfnt_off00006296.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6296	18984 bytes
SHA-256: `bed0a7dac96498375f4eaea59b570525fab5ec2b3fb3a823c1f5d212ca36b463`

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