PDF malware analysis — malicious · f6e823d9bc82f56a

MALICIOUS

PDF

45.7 KB Created: 2021-06-07 15:02:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 64326530e490271da5a7e0a85ecacd8b SHA-1: aad3c750f22e1df3dcd02f19cf766d81afe27cc3 SHA-256: f6e823d9bc82f56a04e4cef935f0244f1ac12eaf09ff4d6ca46ceea111661dcf

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a fake CAPTCHA lure, directing users to external URLs that promise game hacks and generators. The primary URL, https://netcdn.tw/app/431946152/roblox-com-free-online-game-hack, is associated with a high-risk lure designed to entice users into clicking through potentially malicious content. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in game cheats to deliver further malicious content or facilitate exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

Heuristics 5

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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 https://netcdn.tw/app/431946152/roblox-com-free-online-game-hack PDF link annotation
- http://jbtlive.com/assets/CKImages/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/pokemon-go-free-incense_GM1094591345.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/free-roblox-acc_GM431946152.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
- http://jbtlive.com/assets/CKImages/files/weird-roblox_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_off00005396.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5396	26268 bytes
SHA-256: `ad70dda31af78117aaeafb1d2ca266e9049e51281a4366b9652d7535eab9a00b`
`font_01_sfnt_off0000901e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x901E	18328 bytes
SHA-256: `bebef702ce792361577dda03c0cb2d602be7241463e42481af60a40c311d34a8`

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