Malicious PDF — malware analysis report

Static analysis result for SHA-256 01b5b72b256691df…

MALICIOUS

PDF

34.2 KB Created: 2021-06-25 22:38:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 90539c226f293a1ab07391682beaafa7 SHA-1: 7af5f56a4c9de6470185d299746bc501b3a5ac17 SHA-256: 01b5b72b256691df94005ff1224063de50b245d18ff6319b2ca13a7c3f69ef2f
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and a document body that promotes downloading game hacks, which is a common social engineering lure. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests that the downloaded content might be password-protected to evade initial scanning. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://netcdn.co/app/431946152/building-hacks-for-roblox-bloxburg-game-hack
    • http://library.yamasi.ac.id/repository/enter-password-for-free-robux_GM431946152.pdf
    • http://library.yamasi.ac.id//repository/coin-master-free-spin-today_GM406889139.pdf
    • http://library.yamasi.ac.id/repository/minecraft-free-download-laptop_GM479516143.pdf
    • http://library.yamasi.ac.id//repository/coin-master-free-spin-app-reviews_GM406889139.pdf
    • http://library.yamasi.ac.id/repository/free-coin-master-links_GM406889139.pdf
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://library.yamasi.ac.id//repository/www-free-robux-com_GM431946152.pdf
    • http://library.yamasi.ac.id//repository/coin-master-daily-free-spin-and-coin-link_GM406889139.pdf
    • http://library.yamasi.ac.id/repository/is-uc-pubg_GM1330123889.pdf
    • http://library.yamasi.ac.id//repository/robux-earning-websites_GM431946152.pdf
    • http://library.yamasi.ac.id//repository/google-roblox-games_GM431946152.pdf
    • http://library.yamasi.ac.id/repository/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdf
    • http://library.yamasi.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdf
    • http://library.yamasi.ac.id//repository/roblox-mobile-hack_GM431946152.pdf
    • http://library.yamasi.ac.id//repository/free-roblox-clothes-and-hair_GM431946152.pdf
    • http://library.yamasi.ac.id//repository/free-robux-codes-generator_GM431946152.pdf
    • http://library.yamasi.ac.id/repository/open-coin-master_GM406889139.pdf
    • http://library.yamasi.ac.id/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdf
    • http://library.yamasi.ac.id//repository/roblox-zone-free-robux_GM431946152.pdf
    • http://library.yamasi.ac.id//repository/rich-free-roblox-accounts_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e04.bin
a220032705d471d4cee93873b77a566f98fa0735ff5d1b58b0c764fe293aa37f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E04 22540 bytes
font_01_sfnt_off00005ff8.bin
aff3b72783af071b1d47c49fc39b112cf398adcc88d2b38f589ef9aceed9ba1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF8 19256 bytes

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