Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b4f7331e60441ea…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 03:47:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a7889acbee9485d8cf65451f6da15605 SHA-1: 0b116c231b43851860487eea6f1925ebc6207d3b SHA-256: 0b4f7331e60441ea1026f9fa426da3952ead50a12994892071d44e7dd8e4310b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, with a primary URL pointing to a 'minecraft-hacked-client-game-hack' lure. This, combined with the ML classifier's high confidence, indicates a malicious intent to trick users into downloading potentially harmful content or visiting a phishing site. The document body, though partially corrupted, reinforces the theme of game hacks and generators.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/minecraft-hacked-client-game-hack PDF link annotation
    • http://www.perpus.stfm.ac.id/repository/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/robux-gratis-2021-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-do-you-get-free-robux-on-survey_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-meme_GM431946152.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
font_00_sfnt_off000030ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EA 22440 bytes
SHA-256: d14f60e0e19be7d2d54dc6755a2af2f3a456b068d221a9d7b8201f90b861e9c3
font_01_sfnt_off000062f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F2 18272 bytes
SHA-256: 0fd2c848ddb47650564216b877fc40ab0e75fea84b18b99b3308064a801b9109

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