Malicious PDF — malware analysis report

Static analysis result for SHA-256 96bf02adb43b2622…

MALICIOUS

PDF

44.0 KB Created: 2021-06-03 14:06:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 45c91a8ae9621c67f5a24103bc4b9928 SHA-1: ee4dc87aa460bcec58f44f1b0d941a9d87a1f4a0 SHA-256: 96bf02adb43b262270b65f9bc978b74ed687d5411f81e2c21487bf34094ee232
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, masquerading as a 'free Robux generator' to entice users. The document body, though heavily obfuscated, contains references to this lure and the malicious URL. The presence of multiple redirector links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or phishing sites.

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-robux-generator-com-roblox-hack-game-hack In PDF document text
    • http://lib-smansumsel.sch.id/repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-coin-spin_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-cards_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
stream_004_off00004f7a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F7A 24496 bytes
SHA-256: 7072aed66ff941be63c8b342930769a66dba80aee37d823a68a0a9b042f8d509
font_01_sfnt_off00008791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8791 18852 bytes
SHA-256: 4f913a2277500713712aa6cd09c4e12b5f8093088fb24eab89a43b1b22929045

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