Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae0bac4e0c8b35b9…

MALICIOUS

PDF

34.7 KB Created: 2021-06-19 04:09:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: fd2bd8b657a11f6769f412d611a1ad6a SHA-1: dcd8cc607950edb274f27d05c4590e0f822d67c4 SHA-256: ae0bac4e0c8b35b906960583786714c6fe1f07413a67077181ce92e705c671b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generators" and "game hacks" for popular games like Roblox and Coin Master. The document body explicitly contains the URL http://netcdn.co/app/431946152/roblox-hack-adopt-me-2021-codes-game-hack, which is identified as a malicious redirector. The presence of these links and the lure content strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/roblox-hack-adopt-me-2021-codes-game-hack In PDF document text
    • http://digilib-pps.unja.ac.id/repository/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/online-free-roblox-games_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-run-faster-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-free-items-in-roblox-live_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-rich-roblox-accounts-discord_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-no-human-verification-no-survey-no-offer_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-with-no-tests_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/hack-catalog-roblox-mod-menu_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-without-downloading-apps_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_off00003048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3048 21792 bytes
SHA-256: d50497b6ba57af607415956bf25c3b1d0c04ba00ed21bea6c6c0eceb72f2d4e5
font_01_sfnt_off0000603d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603D 19708 bytes
SHA-256: 3a2a36b2cf39e80f6b2a054e122dfd4438b89167af1aeca31eb59193bd015bec

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