PDF malware analysis — malicious · 33b88bafa4d54918

MALICIOUS

PDF

35.0 KB Created: 2021-07-07 03:03:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 2d4d32bdabcd87a4fdfb9523a7b8021f SHA-1: df5c831016687dca9055186fe277c823f1bf8548 SHA-256: 33b88bafa4d54918fc8542f39a3d2bd097cabaaccff99f507d732c54576ef870

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to game hacks and free currency, directing users to the URL http://netcdn.tw/app/479516143/is-minecraft-bedrock-edition-free-game-hack. This URL is highly suspicious and likely leads to a malicious payload or phishing page. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to trick users into visiting a dangerous site.

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/is-minecraft-bedrock-edition-free-game-hack PDF link annotation
- https://www.liputanbali.com/assets/CKImages/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/roblox-free-robux-generator-hack_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/how-to-get-free-items-in-roblox-february-2021-23rd_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/bloxburg-roblox-free-download_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/hacking-roblox-discord_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/pokemon-go-free-coins_GM1094591345.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/master-coin-free-link_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/how-do-you-get-free-robux-easily_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/v3rmillion-free-roblox-injector_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/how-to-et-free-robux-in-a-roblo-game_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/yammy-xox-roblox-hacking_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.liputanbali.com/assets/CKImages/files/free-spin-coin-master-game_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_off000032e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32E1	22544 bytes
SHA-256: `ed64b4c4850fdc106c905d4b0bba93ad658ac53abb82bdfb2ecaba0bac673394`
`font_01_sfnt_off00006552.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6552	18560 bytes
SHA-256: `8c2aade69ad879b6b8c52caec59c1b00876ea4d1a7a1da7d8dbd37bdf8bae558`

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