Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcd4e013e2a9d7b7…

MALICIOUS

PDF

46.7 KB Created: 2021-06-03 23:11:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9eb3a7616bd852d7c90f38eea4cff853 SHA-1: 7d90e3801192c3771c87dce8af7b7a76984cac67 SHA-256: bcd4e013e2a9d7b76612b51f95a834cbe70cbc5732c57a9e7a52e6a501fa74d6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that are designed to lure users into clicking on links related to game hacks and generators. The primary URL, https://netcdn.online/app/406889139/coin-master-link-today-game-hack, is flagged as a game hack redirector. The document's structure and content suggest a phishing or scam attempt to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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-link-today-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-no-human-verification-and-no-survey_GM431946152.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_off0000502d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x502D 24956 bytes
SHA-256: 6f9c9e2a30cfbdc26a3f87853350335567f7da5f347cc43585296ffc3166f49b
font_01_sfnt_off00008a26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A26 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off00009411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9411 18072 bytes
SHA-256: 9ba18410547103ebf9977f1e8d0e3c845630f063c7b47a9dc3698bca19a27760

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