Malicious PDF — malware analysis report

Static analysis result for SHA-256 4325d1f848a89144…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 05:09:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1a7627fe7a0078ae15a9bd3b129a4c89 SHA-1: 9fc5996442746405b5f48eeed2050a6f2897cccb SHA-256: 4325d1f848a89144a5454a6ffd10141b0c422f792b6d552994cfcbd4d2f3e60b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to external websites, including one identified as a malicious redirector. The primary lure appears to be related to 'game hacks' and 'free generators', suggesting a social engineering tactic to trick users into downloading further malicious content. The ML classifier also strongly indicated maliciousness.

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-hack-version-download-2021-game-hack In PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/tiktok-free-mockup_GM835599320.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-online-free-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_off000052e2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52E2 24780 bytes
SHA-256: 49020277852b8cac73d5c39d0f4008b3dc34c4fac11ad098e43a0a3817b18b91
font_01_sfnt_off00008aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA2 18832 bytes
SHA-256: 10a49c8f5e0c2228bf8891dcd296cb3cf64f302ec606424858ebb68f2fddb877

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