Malicious PDF — malware analysis report

Static analysis result for SHA-256 57342e6c5ea1bea3…

MALICIOUS

PDF

33.6 KB Created: 2021-06-28 23:33:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 459c0402110550e395faf56163968859 SHA-1: ffba14b8fe08c810ef7d1de255f027296de19883 SHA-256: 57342e6c5ea1bea364470cce42d017936c77d381ce2806273d4efff415174e21
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, masquerading as 'free generators' or 'game hacks' for popular games like Roblox. These redirectors likely serve as a gateway to further malicious content or exploits. The presence of multiple lures and the ML classifier's high confidence score indicate a deliberate malicious intent.

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/hhack-how-to-get-free-robux-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/we-hack-com-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/pokemon-go-mod-apk-joystick-free-download_GM1094591345.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-troll-outfits_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/spin-coin_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-only_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-horror-games-multiplayer-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/download-roblox-hack-android-apk_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-games-no-scams_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hacker-outfit_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-promo-codes-june-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/tdm-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-mad-city-money-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-2021-may_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-on-roblox-ohantom-forces_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-content-deleted_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_off00002dbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DBC 21660 bytes
SHA-256: 5c864bbed7fbc2b561fac0b5a655a044b6a6adb659a90d4556ea4d1dbfe49b92
font_01_sfnt_off00005d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4A 19320 bytes
SHA-256: 35727b5e1dadbde53c12067c5db7429d7db9eca2075a6608a720412e2a3ff746

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