PDF malware analysis — malicious · 9db0c00cc58c70e4

MALICIOUS

PDF

35.7 KB Created: 2021-07-04 18:18:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: ec0b19490ee7576bad432eabfe153fd5 SHA-1: 0a079425bb5ce7f9ceb576b2831c6ef3e3e65e64 SHA-256: 9db0c00cc58c70e464cb0e6f95f4a50ffb0badd30ce9bf63f1a53e2d771e917b

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/406889139/coin-master-free-spins-daily-2021-game-hack PDF link annotation
- http://www.repion.com/uploaded_files/userfiles/files/roblox-anti-cheat-speed_GM431946152.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/brick-bronze-roblox-cheats_GM431946152.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/roblox-phantom-forces-credit-hack-rc7_GM431946152.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/roblox-2021_GM431946152.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/how-to-hack-roblox-account-cookie_GM431946152.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/how-to-get-free-robux-card-codes_GM431946152.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/free-robux-scam_GM431946152.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/cm-spins_GM406889139.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/roblox-vehicle-simulator-money-hack-script_GM431946152.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/robux-free-robux_GM431946152.pdfIn PDF document text
- http://www.repion.com/uploaded_files/userfiles/files/minecraft-net-free_GM479516143.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_002_off0000326b.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x326B	23332 bytes
SHA-256: `12ea33fd91e8d48150b81b163c84a9b39880bb83f8343d6ea54b74b5551083a1`
`font_01_sfnt_off000066b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66B6	19000 bytes
SHA-256: `b814766d9c7402c53a67f950003b037573ebc2ab6a90739559792a4ced8a8c51`

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