Malicious PDF — malware analysis report

Static analysis result for SHA-256 777e7602b4c208ef…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 17:23:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: e93582ca64fda0b9db5f00b8756fdf2e SHA-1: 3018b4ae4858c16f54d77af91e000f46bfa1b327 SHA-256: 777e7602b4c208ef9983efe29f09057794a733aa374cc3b52d2150ea19107719
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The document body and heuristics indicate a lure to download or access these "hacks", which is a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious redirector workflow designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/cheats-for-coin-master-game-hack In PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-hack-gg-uardian_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-34-4-hack-download_GM406889139.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_off00005343.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5343 25392 bytes
SHA-256: d0d21d09c0f1d1bcdca3ceea41d663cee8433e6797fa23b8725f3a31a937e82f
font_01_sfnt_off00008dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC0 17876 bytes
SHA-256: 503fe8d746beae52c5eef18798c5d93272f0ad11156ff4c57f17f4a0b53681c9

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