Malicious PDF — malware analysis report

Static analysis result for SHA-256 1645d3023d075ca4…

MALICIOUS

PDF

45.6 KB Created: 2021-06-03 12:28:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 70ad0b849dc02f61767aae4d53fd23c0 SHA-1: 894a01db59634e054997a74e7fc9d23b9f75b42d SHA-256: 1645d3023d075ca47aac4a7755f922765e554d43ae9afabeac496317c215ecdb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and generators, identified as malicious redirectors. The document body and embedded URLs strongly suggest a lure for users seeking cheats or in-game currency, which is a common social engineering tactic. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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-free-shield-game-hack In PDF document text
    • http://lib.icbc-indonesia.org//repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/pokemon-go-free-coins-code_GM1094591345.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/hack-pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-coin-app_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/breaking-point-tips-and-tricks-and-hacks-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
stream_004_off00005142.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5142 30892 bytes
SHA-256: b2d3c976c6c9d3ac3ee6cfccc54a5dc7b8a12a726ded758dcbcdb25392334bce
font_01_sfnt_off0000908c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x908C 18124 bytes
SHA-256: 0603797a96d274ba874b32f91d1fb50d5f45d88cdb7e6803905a22f8023fb5df

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