Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e58cb8abf3dac0…

MALICIOUS

PDF

42.3 KB Created: 2021-05-17 08:28:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ff883f4ae03af59f1d4704f9c082d2d6 SHA-1: d2b5bcfcd740c6875e2a9e56593b11c4d07d56f8 SHA-256: f5e58cb8abf3dac086efa33d13e3a04e62f38c9995003b5e7a8106bad708a3d2
122 Risk Score

Malware Insights

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

This PDF document employs social engineering tactics, specifically an advance-fee scam lure related to free game content, to trick users into downloading further malicious content. The heuristic 'SE_CLICKFIX' indicates the document likely instructs users to execute commands, potentially bypassing macro restrictions. The embedded URL 'https://netcdn.xyz/app/479516143/how-to-get-minecraft-for-free-on-ps4-game-hack' is a primary indicator of the malicious payload's distribution point.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/479516143/how-to-get-minecraft-for-free-on-ps4-game-hack
    • http://bressanassessoria.com.br/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
    • http://bressanassessoria.com.br/images/free-robux-without-human-verification_GM431946152.pdf
    • http://bressanassessoria.com.br/images/coin-master-unlimited-spins-apk-free-download_GM406889139.pdf
    • http://bressanassessoria.com.br/images/coin-master-hack-android_GM406889139.pdf
    • http://bressanassessoria.com.br/images/coin-master-link-spin_GM406889139.pdf
    • http://bressanassessoria.com.br/images/coin-master-free-coins--spins_GM406889139.pdf
    • http://bressanassessoria.com.br/images/coin-master-hack-app-2021_GM406889139.pdf
    • http://bressanassessoria.com.br/images/coin-master-mod-version-free-download-v344_GM406889139.pdf
    • http://bressanassessoria.com.br/images/free-coins-coin-master-link_GM406889139.pdf
    • http://bressanassessoria.com.br/images/coin-master-hack-ios-no-verification_GM406889139.pdf
    • http://bressanassessoria.com.br/images/minecraft-pocket-apk_GM479516143.pdf
    • http://bressanassessoria.com.br/images/coin-master-hack-facebook_GM406889139.pdf
    • http://bressanassessoria.com.br/images/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdf
    • http://bressanassessoria.com.br/images/coin-master-hack-that-actually-works_GM406889139.pdf
    • http://bressanassessoria.com.br/images/free-spins-and-coins-coin-master-app_GM406889139.pdf
    • http://bressanassessoria.com.br/images/coin-master-hack-tool-no-human-verification_GM406889139.pdf
    • http://bressanassessoria.com.br/images/robux-claimer_GM431946152.pdf
    • http://bressanassessoria.com.br/images/free-coin-master-spins-link-facebook_GM406889139.pdf
    • http://bressanassessoria.com.br/images/coin-master-hack-2021-iphone_GM406889139.pdf
    • http://bressanassessoria.com.br/images/coin-master-332-apk-free-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bc3.bin
ac5ba26399bf1975a40bac5c0d04ab6ef927c58f6f930ce233f956e7f4d5c346		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BC3 24964 bytes
font_01_sfnt_off000083ad.bin
3c584cfdb2e84eddbd4369948c7cb3512903decb89ab4dae7c156f2377516814		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83AD 18088 bytes

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