Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb3b1eda338b66b1…

MALICIOUS

PDF

35.3 KB Created: 2021-06-28 22:49:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 921b86552bd2fc83fe8e2792ce0d836b SHA-1: 6a40919d476bc474eaae0385d2b66c05c4b16f23 SHA-256: bb3b1eda338b66b1fd5ceddad82c75957c9f344f2e64c6b1a9482778063b79cf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'free currency' lures. The primary redirector URL is http://netcdn.co/app/431946152/oneapprewards-com-roblox-hack-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt designed to lead users to potentially harmful websites.

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/oneapprewards-com-roblox-hack-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/characters-roblox-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-old-roblox-accounts-pastebin_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/proxo-roblox-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-robux-cheaten_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/29-500-robux-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/demogorgon-roblox-free-body_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-hack-someones-account-on-roblox_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_off00003196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3196 22484 bytes
SHA-256: 61b54e2bb417261f771296ee8461fedc5b91db6a93e6ddd273c868df1112ea20
font_01_sfnt_off000063d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D8 19432 bytes
SHA-256: 2c842026ce93e5ed81b4133c847824faefe0ea624971f18b7d88ebec56824f43

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