Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b7885ccb3115bb2…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 10:16:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 74f0e75e73c9662c16d28fb1fcf1ec8b SHA-1: 39cfc20efe05281e7a54088057f763ef24942ec6 SHA-256: 2b7885ccb3115bb2497cd41bcd6bbaec1118f846073dfd3f3b5cac6b1c7d7402
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/431946152/free-robux-no-password-game-hack PDF link annotation
    • https://library.sman1berau.sch.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-install-free_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/moon-active_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-iphone-free_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_off00005180.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5180 25764 bytes
SHA-256: 6869faf21b2a6911d972b462587d22f4dcbcc5941d336c64212b86eefb1c4c33
font_01_sfnt_off00008cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEA 18732 bytes
SHA-256: b254955316d184f98c6f6070526605807868e3146c8b9e5f8ca39f20861b2296

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