Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb528b0096f99eb6…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 21:41:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2c959c09059ba73c3159b1a66d575a91 SHA-1: 29323ae028fe76082635a950ca5ad18de110d363 SHA-256: bb528b0096f99eb6da871f3d79ec40632093edfe2daf01105006acd1f10ddcc2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious domain, masquerading as a game hack generator. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring the user to click a link that leads to potentially harmful infrastructure.

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/coin-master-tricks-and-hacks-game-hack In PDF document text
    • http://www.digilib.uim.ac.id/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/robux-website_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/picture-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-app_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-coin-spin_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_off00005220.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5220 24640 bytes
SHA-256: dd269edd654532fbf1083e23377d820c804e9d4aa290c0659796908ede309e71
font_01_sfnt_off00008821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8821 17888 bytes
SHA-256: 6b40f6b54227a57bca670b7ddbf89328ee1638c3cadd4e2aadbe35f25d791a64

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