Malicious PDF — malware analysis report

Static analysis result for SHA-256 930da718ca76a738…

MALICIOUS

PDF

45.5 KB Created: 2021-05-11 20:03:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 648f1592141e284b178f10cfb787fc7d SHA-1: e8da867bd9c8626cde95c4ebebac52840e13682b SHA-256: 930da718ca76a7383ab298352a48a8c65cd8666df9baa5cbdfcda5157ab2b158
102 Risk Score

Malware Insights

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

The document contains a lure for recovery secrets or private keys, combined with embedded URLs pointing to applications. The primary URL suggests a 'Coin Master Rewards App hack', indicating a social engineering tactic to trick users into downloading potentially malicious software. The presence of multiple related URLs reinforces this phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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-rewards-app-game-hack
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/www-rbxhut-com_GM431946152.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/roblox-free-followers_GM431946152.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/microsoft-store-robux_GM431946152.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/free-spins-coin-master-site-wwwquoracom_GM406889139.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/free-spin-link-coin-master-today_GM406889139.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/free-games-like-coin-master_GM406889139.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/roblox-arsenal-hacks-download_GM431946152.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/minecraft-windows-10-edition-hacks_GM479516143.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/free-girl-hair-roblox_GM431946152.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/minecraft-server-free-trial_GM479516143.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/roblox-g_GM431946152.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/scary-larry-roblox_GM431946152.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-link_GM406889139.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/minecraft-bedrock-for-free_GM479516143.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/hacks-for-minecraft-windows-10_GM479516143.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/how-to-get-more-robux_GM431946152.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/good-free-minecraft-server-hosting_GM479516143.pdf
    • https://elearning.mtsn1bandarlampung.sch.id/__statics/gudangsoal/files/free-spins-coin-master-blogspot_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c1c.bin
033a475a2e3799c05d42a65f3cd24a9238e5515ac0c6ca31b4824cc081305da6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C1C 25452 bytes
font_01_sfnt_off000085fa.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85FA 2840 bytes
font_02_sfnt_off00008fac.bin
1ace4c7085401291f58e102c272718a2ec9341f0a4396f264039734a0ad902b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAC 18060 bytes

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