Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e7769ff7931b311…

MALICIOUS

PDF

47.0 KB Created: 2021-06-04 03:02:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 668d848ab5684e1bb5bb44e705ae361e SHA-1: e673ffe93ce4ce59b4848204e36911192a9cfeeb SHA-256: 2e7769ff7931b311f0dcb7c75f457191cc7469fcc0626f7812e1fae829e3e83c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'Coin Master Free Spins' and includes an embedded URL pointing to a suspicious domain. The presence of a 'download button' heuristic and a 'password archive lure' suggests the document is designed to trick users into downloading a malicious file or providing credentials. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.online/app/406889139/coin-master-free-spins-link-2021-haktuts-game-hack PDF link annotation
    • https://library.iuli.ac.id/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-hack-pro_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-official-page_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-admin-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52E6 24868 bytes
SHA-256: afa1195544b1cdcf67d343c1dfa1f84d185a67ab3e7781944a512c010738e61a
font_01_sfnt_off00008a1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A1C 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off000093ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93CE 18600 bytes
SHA-256: 17fca5a110173985813f3878a6a354acd9691d8bd8a3bfb3ba74e1722aeabc4d

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