PDF malware analysis — malicious · 53be62b665396a7d

MALICIOUS

PDF

44.2 KB Created: 2021-05-13 04:25:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 9b4fb22aaa323005015aac0e93b86450 SHA-1: a45e5e0ede3db59af00cfd98c56975da37d111b5 SHA-256: 53be62b665396a7de8d948f8b2cc6618c612e96a5c1621c997b02352263ece40

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a heuristic firing for a 'Recovery secret / private key request' lure, indicating a phishing attempt. The document body, though heavily obfuscated, contains text related to game hacking, suggesting a lure to trick users into revealing sensitive information or downloading a payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9648

Heuristics 4

Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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/406889139/hackear-juego-coin-master-game-hack
- http://osteonad.com/images/coin-master-hack-no-verification_GM406889139.pdf
- http://osteonad.com/images/hacks-for-roblox-prison-life_GM431946152.pdf
- http://osteonad.com/images/freerobuxhack-us-2021_GM431946152.pdf
- http://osteonad.com/images/free-robux-instantly_GM431946152.pdf
- http://osteonad.com/images/coin-master-free-spin-link-app_GM406889139.pdf
- http://osteonad.com/images/rbx-place-free-robux_GM431946152.pdf
- http://osteonad.com/images/free-robux-codes-2021_GM431946152.pdf
- http://osteonad.com/images/robux-free-promo-codes_GM431946152.pdf
- http://osteonad.com/images/google-how-do-you-get-free-robux_GM431946152.pdf
- http://osteonad.com/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdf
- http://osteonad.com/images/how-to-get-2021-robux-for-free_GM431946152.pdf
- http://osteonad.com/images/how-to-get-java-minecraft-for-free_GM479516143.pdf
- http://osteonad.com/images/coin-master-hack-without-verification-code_GM406889139.pdf
- http://osteonad.com/images/how-to-hack-a-roblox-account-easy_GM431946152.pdf
- http://osteonad.com/images/how-do-i-get-free-coins-in-coin-master_GM406889139.pdf
- http://osteonad.com/images/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdf
- http://osteonad.com/images/coin-master-free-spin-today_GM406889139.pdf
- http://osteonad.com/images/get-robux-now_GM431946152.pdf
- http://osteonad.com/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdf
- http://osteonad.com/images/coin-master-hack-ios-cydia_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004857.bin` `ac202f933a5fcf421b353e3275af23548cf80cea0a75ccfd3d5cf6bc4e124828`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4857	24792 bytes
`font_01_sfnt_off0000800b.bin` `601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x800B	2920 bytes
`font_02_sfnt_off00008a24.bin` `85adf4a15c24233f1c93bca6a3c18238941d111dac195f6ddf82d6394f744ad0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A24	18308 bytes

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