Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6a0b800f94d021…

MALICIOUS

PDF

44.5 KB Created: 2021-06-04 03:40:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 9b2a0dafc2611d7db9055c514393b404 SHA-1: 70027a0f01633396aec68348d7173fb313e7c5f9 SHA-256: 2b6a0b800f94d0217dc6ca21b26c7a505770dbd4c3880a30f5a85e716f9ee66d
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/roblox-devil-game-hack In PDF document text
    • https://pustaka.mic.sch.id//repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/all-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/robux-codes_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/what-are-points-for-in-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_off00004d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D6F 28176 bytes
SHA-256: e8968047b70dbc41cbd84435ea478a74fd5417a2bdd0315142b3e6787c140c73
font_01_sfnt_off00008bce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCE 18184 bytes
SHA-256: 228d9baa03aba80999033b04d18df637c8a6ae95d309aac9b6611bd5d5156bd2

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