Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c697c10e1f7f8a5…

MALICIOUS

PDF

44.0 KB Created: 2021-06-04 02:39:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c9e5ba5f262e25464aa73db7c6bdd474 SHA-1: d6ac93452beaca7c5d68c2c7730840ac55ad853b SHA-256: 8c697c10e1f7f8a570cc791838b2c631c858cc1d4a88e60ead9767099634bd1f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free executors' and 'game hacks' for platforms like Roblox. The document body and heuristic firings strongly indicate a lure to trick users into visiting these malicious sites, likely for further malware delivery or credential harvesting. No scripts were extracted from this sample.

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/431946152/free-executor-roblox-game-hack In PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-face-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-the-coin-master-game_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
font_00_sfnt_off00004ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EF5 25268 bytes
SHA-256: 172274c43e6c5e7eb6a03a64600b9ea801eda54e0416c11cc47e3e604f3433b8
font_01_sfnt_off000089ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89AB 18192 bytes
SHA-256: 76421a682e25ddc3073895da10e5f06be723ab9914bfc49cca563022476f5c91

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