Malicious PDF — malware analysis report

Static analysis result for SHA-256 f72755ccb1b3c18a…

MALICIOUS

PDF

40.8 KB Created: 2021-05-12 01:40:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 442e5b58a1f0fff8c0e05aecf91bfa93 SHA-1: ad00f87707635bb35d71e96904d0abe1090bf593 SHA-256: f72755ccb1b3c18a73d436e6dcd6e5847ddc4cc1795666785363d010e5887f93
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The document exhibits high-risk behavior by requesting sensitive recovery secrets or private keys, masquerading as a game hack. It also contains an embedded URI pointing to a suspicious URL, likely intended to host a malicious payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/coin-master-stop-attack-hack-game-hack
    • http://yochin.org.tw/images/how-to-hack-minecraft-pe_GM479516143.pdf
    • http://yochin.org.tw/images/coin-master-free-spin-trick_GM406889139.pdf
    • http://yochin.org.tw/images/coin-master-free-spins_GM406889139.pdf
    • http://yochin.org.tw/images/roblox-prison-life-hack_GM431946152.pdf
    • http://yochin.org.tw/images/coin-master-village-4_GM406889139.pdf
    • http://yochin.org.tw/images/free-roblox-hair-codes_GM431946152.pdf
    • http://yochin.org.tw/images/how-to-hack-to-get-robux_GM431946152.pdf
    • http://yochin.org.tw/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdf
    • http://yochin.org.tw/images/free-robux-pins_GM431946152.pdf
    • http://yochin.org.tw/images/how-to-earn-free-robux_GM431946152.pdf
    • http://yochin.org.tw/images/vip-roblox-free_GM431946152.pdf
    • http://yochin.org.tw/images/free-2021-robux_GM431946152.pdf
    • http://yochin.org.tw/images/get-free-coin-master-coins_GM406889139.pdf
    • http://yochin.org.tw/images/hack-coin-master-free-spins_GM406889139.pdf
    • http://yochin.org.tw/images/where-to-get-free-robux_GM431946152.pdf
    • http://yochin.org.tw/images/coin-master-generator-free_GM406889139.pdf
    • http://yochin.org.tw/images/roblox-games-that-give-you-free-robux_GM431946152.pdf
    • http://yochin.org.tw/images/free-spins-on-coin-master_GM406889139.pdf
    • http://yochin.org.tw/images/free-roblox-promo-codes-for-robux_GM431946152.pdf
    • http://yochin.org.tw/images/coin-master-free-spins-link-today-new_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000045be.bin
484fcd065ff7253984f7b2579e4436c3779bee91035e2dd651687a6e67c60b77		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45BE 25000 bytes
font_01_sfnt_off00007e40.bin
39a576627da682e915740756597514a1a33942882bdfaf8ae0370b937314ba67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E40 17892 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.