PDF malware analysis — malicious · 2bbeb2dda00f2540

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 00:43:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: b7ccf44887ed3c51f8976a33bb7b22da SHA-1: 13d877acb0d7b4f7001acdd14760c0eb720ba738 SHA-256: 2bbeb2dda00f2540363ff956fd1f9cc7716e80686d8d8116da856c98e3be6510

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/431946152/free-robux-redeem-codes-game-hack PDF link annotation
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-boombox-roblox-item_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-robux-accounts_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/is-pokemon-go-community-day-free_GM1094591345.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/free-model-3d-roblox_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/ww-robux_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.kis.ac.th/kis_international/assets/uploads/img/all/files/roblox-arsenal-hack-script-pastebin_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
`font_00_sfnt_off000031df.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31DF	22476 bytes
SHA-256: `d1698972737500599afa75bdf8f13a00285815ad78ccb4ef5ae4e4130756b401`
`font_01_sfnt_off000063e3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63E3	19152 bytes
SHA-256: `2beb9c583ef49ea143b974913017cf2f00d835df8237c6c52447211218059ebd`

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