PDF malware analysis — malicious · 5c50bda4f4e1a5fa

MALICIOUS

PDF

41.0 KB Created: 2021-05-13 21:03:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 859f6b708647a703760d26cedaeb2241 SHA-1: a6d7f45e6582367cb7413c25abacb9cc7a2e68aa SHA-256: 5c50bda4f4e1a5faa167cd9438101ebfc3f4941f394ad15108979376fe0b8321

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to websites promising free in-game currency or hacks. These links are designed to lure unsuspecting users into potentially malicious sites. The presence of these lures and the high ML confidence score indicate a malicious intent to trick users into visiting potentially harmful external resources.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/roblox-free-robux-website-game-hack PDF link annotation
- https://www.dealcafe.me/uploaded_files/userfiles/files/easy-robux-generator_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/roblox-script-hack_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/game-give-free-robux_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/wurst-client_GM479516143.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/coin-master-haktuts_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/free-robux-clothes_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- https://www.dealcafe.me/uploaded_files/userfiles/files/mcmaster-club-coin-master-hack_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
`stream_003_off0000460d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x460D	24120 bytes
SHA-256: `03261718384c7c788e4bd4e8b922c69c61a6a65389f992be524c76a6a4da54c6`
`font_01_sfnt_off00007d3a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D3A	18508 bytes
SHA-256: `fbcd203c7e924a0ebec4ef4aa0eb55ec8b14d1abcc2767c4f5d3ad1ccc86f8e3`

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