PDF malware analysis — malicious · 03cd16c8ced3bb8b

MALICIOUS

PDF

46.8 KB Created: 2021-06-02 08:31:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 626f895bd006107b917442a0c499da76 SHA-1: cb0e602fb3f684b956562fb3d98ead01404d8329 SHA-256: 03cd16c8ced3bb8ba59fb3e287ccfcd5c6718ba718e0f1783f372bdc4841af98

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "Free Robux Generator" and links to external URLs, indicating a phishing or scam attempt. The presence of embedded URLs and a high ML classifier score suggest malicious intent, likely to redirect users to a malicious site or download further payloads. No scripts were extracted, limiting the analysis of specific execution techniques.

Machine Learning

Nyx PDF Classifier malicious score 0.9749

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 https://netcdn.xyz/app/431946152/free-robux-generator-no-verification-2021-game-hack PDF link annotation
- https://cdu-lengerich.de/images/roblox-speed-hack_GM431946152.pdfIn PDF document text
- https://cdu-lengerich.de/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
- https://cdu-lengerich.de/images/roblox-free-robux_GM431946152.pdfIn PDF document text
- https://cdu-lengerich.de/images/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
- https://cdu-lengerich.de/images/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
- https://cdu-lengerich.de/images/get-robux-today_GM431946152.pdfIn PDF document text
- https://cdu-lengerich.de/images/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
- https://cdu-lengerich.de/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
- https://cdu-lengerich.de/images/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
- https://cdu-lengerich.de/images/get-free-robux-gg_GM431946152.pdfIn PDF document text
- https://cdu-lengerich.de/images/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
- https://cdu-lengerich.de/images/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
- https://cdu-lengerich.de/images/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
- https://cdu-lengerich.de/images/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
- https://cdu-lengerich.de/images/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
- https://cdu-lengerich.de/images/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
- https://cdu-lengerich.de/images/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
- https://cdu-lengerich.de/images/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
- https://cdu-lengerich.de/images/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
- https://cdu-lengerich.de/images/getrobux-info_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00004e52.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4E52	24048 bytes
SHA-256: `789258938f6b5202e2ea768bdbd13bbe4ece95d047c4f211f022dab00ad98b0e`
`font_01_sfnt_off000084ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84FF	5596 bytes
SHA-256: `9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5`
`font_02_sfnt_off000091a6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x91A6	19004 bytes
SHA-256: `d45ec0ea85e3f4da21cb27ccd2cd6df352304457fff04a0939a67aeffe4f8bf1`

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