PDF malware analysis — malicious · 3d0467fbdf82db17

MALICIOUS

PDF

32.7 KB Created: 2021-07-05 12:41:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 6a6bbbd46645bd5f7f4a26ce875f5748 SHA-1: a9c44e456c40b28c34e78d729ae64289e44c92b1 SHA-256: 3d0467fbdf82db172777343b833b221d4e8a64e6a6b840ae7a5dc5d6af2c454a

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency and hacks, directing users to a suspicious URL. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs and a call-to-action button reinforces the phishing or malware distribution intent. No scripts were extracted, but the document's structure and content point towards a social engineering attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9824

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/robux-free-gift-card-org-hack-game-hack PDF link annotation
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-videos_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/best-free-driving-games-on-roblox_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/fiddler-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/minecraft-logo-maker-free_GM479516143.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/150-free-robux_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/hacks-for-sprinting-sim-roblox-for-download_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/can-you-give-me-robux_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/hacking-station-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_off00002af7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2AF7	21748 bytes
SHA-256: `dedd63e0aeae5b77e15ca9d0abd2fbacd7cb3262a43e4421502bf0a1dcbfb894`
`font_01_sfnt_off00005a78.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5A78	19284 bytes
SHA-256: `f1156f7356268fb459af4e8b8e1a15365edbfdc259dc3c2b8efbc825fbef6ec1`

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