PDF malware analysis — malicious · c3e6e4d6e0107fe5

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 11:22:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 34cb302a91004d37e174a82ecedf8ced SHA-1: cd80b77d484db4acdc68004ba062ba6ca165e3e8 SHA-256: c3e6e4d6e0107fe5bc303698badaa6501970df58f1e49c9b0830ec38b46ccf3e

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a document body that lures the user with game hacks and free currency offers. The primary malicious URL identified is http://netcdn.co/app/431946152/roblox-free-draw-2-tutorial-game-hack, which is likely intended to lead to a malicious download or exploit. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure.

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/roblox-free-draw-2-tutorial-game-hack PDF link annotation
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-accounts_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/vehicle-speed-with-cheat-engine-roblox_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-restraunt-tycoon_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-generator-tool-paste_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-tiktok-coins_GM835599320.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-noclip-hack-download-2021_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-tower-defense-hack_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/make-robux_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/hack-roblox-net-one-hendynummer_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-roblox-doge_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/young-wild-and-free-roblox-id_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_off00002ff8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FF8	22664 bytes
SHA-256: `473e6949d802ffcb08fe359567324bfa7edca172b1e989e38510d6549376f753`
`font_01_sfnt_off000062d5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62D5	19472 bytes
SHA-256: `5a27f0e04ad3fe12143d95a2bdbef5eec870b52731436f42f9b02873818880e6`

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