Malicious PDF — malware analysis report

Static analysis result for SHA-256 cab6a8abf95d6d7e…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 10:14:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 8feb16ce05528cbf98521ba745fb6fc4 SHA-1: 99ef2aa9acbad5395db5db3fb782c3178882b211 SHA-256: cab6a8abf95d6d7ea2c1088088bac8438794487caff06daee154ed7994eaeb2f
102 Risk Score

Malware Insights

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

The document contains embedded URLs and a heuristic firing for a 'Secret Recovery Lure', indicating it attempts to trick users into revealing sensitive information under the guise of downloading game cheats. The ML classifier also flagged this PDF as malicious with high confidence. The primary URL points to a game hack download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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-link-app-download-game-hack PDF link annotation
    • http://library.umla.ac.id/repository/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-items_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/pubg-uc-load_GM1330123889.pdfIn PDF document text
    • http://library.umla.ac.id/repository/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000516a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x516A 25040 bytes
SHA-256: c127caceb8981c3367532f09b0ade8eee51d5dc940d4a8ff1d5e3d477b8fa9e7
font_01_sfnt_off00008b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B85 18636 bytes
SHA-256: 32a0ef7bc703a28f82adf701c2e2937e35ea6468bddc20b05b2b6676dd3e01ab

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