PDF malware analysis — malicious · a650d951da34640e

MALICIOUS

PDF

46.3 KB Created: 2021-05-17 07:00:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 6fd953a8e4abe9964aaedce4e958d84d SHA-1: 2d6a89b8bc8f31a7cfa70ae31e73fb4d17c7db62 SHA-256: a650d951da34640e3394ce1946695c3efbc10741e98c176699ef61d94058e97b

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links and a lure related to game hacks and free currency, specifically targeting users interested in Robux and Coin Master. The primary link, https://netcdn.xyz/app/431946152/how-to-get-free-robux-fast-and-easy-game-hack, is flagged as a redirector to a game hack, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.8696

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/how-to-get-free-robux-fast-and-easy-game-hack PDF link annotation
- http://www.bripi.pl/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/free-robux-cards_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/game-give-free-robux_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/free-coins-and-spins_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/generator-robux_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/coin-master-hack-programers_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/roblox-inappropriate_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
- http://www.bripi.pl/images/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
- http://www.bripi.pl/images/roblox-redeem_GM431946152.pdfIn PDF document text
- http://www.bripi.pl/images/how-to-hack-and-get-free-robux_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_003_off00004729.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4729	25808 bytes
SHA-256: `d0d720b3e059b8b2935365d5a6224e1f42b9bf2a5b25c3542c5e23ef845af03e`
`font_01_sfnt_off00008374.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8374	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off00009086.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9086	18864 bytes
SHA-256: `264ac3d9ee16189788a918c90b00fec891485e046f110455159a23ab28eb8c09`

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