Malicious PDF — malware analysis report

Static analysis result for SHA-256 8007a1b776f448f3…

MALICIOUS

PDF

47.5 KB Created: 2021-06-07 14:14:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8fc8fe0071e7ec7a54407568cd6b567f SHA-1: e39cd78834af7e84aa7a3f4756ebaa7feaa7a693 SHA-256: 8007a1b776f448f3f09470fcb0dcf5f991020f2de18996b4932352975a250a81
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains embedded URLs and a heuristic firing for an external URI, indicating an attempt to redirect the user to a download. The document body, though heavily obfuscated, contains text that suggests a lure related to game hacks, further supported by the presence of a 'download button' heuristic. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/boku-no-roblox-hack-quirk-game-hack In PDF document text
    • http://fkunismuh.org/perpustakaan/repository/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/pokemon-go-font-free-download_GM1094591345.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/corn-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5230 30948 bytes
SHA-256: 1c1245b9f040496ae3901c81d6a44beb7d2c35dc6156625f9dc2ed16e60a2682
font_01_sfnt_off00009629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9629 18600 bytes
SHA-256: c231e2cac5d9d78019ea8a1258cca0621fb2570d532305cd05e3335e1fc6b5ad

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