PDF malware analysis — malicious · acb23a08c4f4f776

MALICIOUS

PDF

35.2 KB Created: 2021-07-09 04:36:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22

MD5: c30b98eee00b787bde075a3289f88772 SHA-1: dd2a2bf840cf66a3c167d249d77c0ee58d06a675 SHA-256: acb23a08c4f4f776fcbc9baf06d7949cd2a0079d8c71bb4425dfde7b9619c731

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.tw/app/431946152/code-free-robux-game-hack PDF link annotation
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-robux-games-working_GM431946152.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-robux-games_GM431946152.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-hack-into-your-account-on-roblox_GM431946152.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-hack-games-using-check-cashed-not-roblox_GM431946152.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/krnl-roblox_GM431946152.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/best-free-roblox-flight-simulator_GM431946152.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/freespins-coin-master_GM406889139.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/roblox-exploit-hack-2021_GM431946152.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/roblox-bots-free-game_GM431946152.pdfIn PDF document text
- https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/rare-free-links-to-coin-master_GM406889139.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_off00003228.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3228	22812 bytes
SHA-256: `b496e722b1f6cdfa66ac6a956646b784cd4e5b8f3e75ad3b70b7873820e322c5`
`font_01_sfnt_off00006544.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6544	18888 bytes
SHA-256: `e09a92444fffebeeb998468a77a403de4618986c60ca4254348b93199fa305b2`

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