PDF malware analysis — malicious · 460faae21a4b104c

MALICIOUS

PDF

50.2 KB Created: 2021-06-03 07:57:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 7ac80852c438b160b0d9630a3438ff8f SHA-1: 8829a1f71360b99125385feca646e662a9aa6b0d SHA-256: 460faae21a4b104ced9c78e0bbe2cdb22bd73b985c435046006ed54e5edb3f05

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document contains a lure for free in-game currency, specifically mentioning Coin Master and Robux, and includes a direct link to download an application. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document may also attempt to phish for sensitive credentials. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious download lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9734

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.online/app/406889139/coin-master-free-spins-daily-game-hack
- https://encounternepal.com/userfiles/files/facebook-coin-master-free-spins_GM406889139.pdf
- https://encounternepal.com/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
- https://encounternepal.com/userfiles/files/coin-master-hack-2021-app-download_GM406889139.pdf
- https://encounternepal.com/userfiles/files/free-coin-master-spin-daily-link_GM406889139.pdf
- https://encounternepal.com/userfiles/files/free-robux-generator-2021-no-survey_GM431946152.pdf
- https://encounternepal.com/userfiles/files/how-to-download-minecraft-for-free-on-android_GM479516143.pdf
- https://encounternepal.com/userfiles/files/how-can-i-get-free-robux_GM431946152.pdf
- https://encounternepal.com/userfiles/files/free-robux-2021_GM431946152.pdf
- https://encounternepal.com/userfiles/files/coin-master-free-spins-hack-apk-download_GM406889139.pdf
- https://encounternepal.com/userfiles/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdf
- https://encounternepal.com/userfiles/files/free-spin-coin-master-twitter_GM406889139.pdf
- https://encounternepal.com/userfiles/files/can-i-download-minecraft-for-free_GM479516143.pdf
- https://encounternepal.com/userfiles/files/free-robux-group_GM431946152.pdf
- https://encounternepal.com/userfiles/files/robux-free-co_GM431946152.pdf
- https://encounternepal.com/userfiles/files/free-coin-app_GM406889139.pdf
- https://encounternepal.com/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdf
- https://encounternepal.com/userfiles/files/how-to-hack-coin-master_GM406889139.pdf
- https://encounternepal.com/userfiles/files/coin-master-hack-version-2021-download_GM406889139.pdf
- https://encounternepal.com/userfiles/files/is-minecraft-vr-free_GM479516143.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000519d.bin` `c154ef3292555fc37c6c5e33ff4062da410806bb7bd476ca868267fd8daa9d8c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x519D	24348 bytes
`font_01_sfnt_off000089a5.bin` `a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x89A5	4028 bytes
`font_02_sfnt_off00009746.bin` `6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9746	2788 bytes
`font_03_sfnt_off0000a136.bin` `220bb6194b1ab8a2bb399ca4a862914ac8d15b354bb0df2c737bc67699221dc9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA136	18308 bytes

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