PDF malware analysis — malicious · 5af66ef1f0891a50

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 07:00:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 420da8af3cd7bea856d41402fca3bccc SHA-1: 18dfe6dfd3ab926efea79e4acdb531aa3d5f6ce2 SHA-256: 5af66ef1f0891a504821f3efa44564ebe222ba5d4fac6c2133d45655fee94117

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document employs a lure of free online game hacks and generators to entice users. It contains a high-risk heuristic firing for a game hack redirector pointing to the URL http://netcdn.tw/app/479516143/free-online-games-like-minecraft-game-hack. This URL is likely used to download and execute a second-stage payload or redirect to a phishing page. The ML classifier also strongly indicated maliciousness.

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/479516143/free-online-games-like-minecraft-game-hack PDF link annotation
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-robux-app_GM431946152.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-roblox-dispenser_GM431946152.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-tiktok-bots_GM835599320.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/cheat-engine-roblox-da-hood_GM431946152.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-roblox-rescources-no-download-or-verification_GM431946152.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-robux-scams_GM431946152.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/www-robuxmaniac-free-robux_GM431946152.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-2021-auto-redeem_GM431946152.pdfIn PDF document text
- https://www.beritabali.com/new/public/ckfinder/userfiles/files/free-coins-for-coin-master_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_off00003382.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3382	22436 bytes
SHA-256: `b504df6ff12289bca2fa30a7f37df7f368fcf0b60a1dcbf2122213aef8ca7047`
`font_01_sfnt_off0000655f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x655F	18360 bytes
SHA-256: `12edbdb7e5e8eae93a28056102ef5b2f042e925c05f1aad9c56af9a659e3286a`

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