Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bfe974cf8b04dde…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 04:57:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 76c7bb9064b1325c4b1ad897116aa3a0 SHA-1: b9def0cde7f3040e2c4dc53517611f401ed817aa SHA-256: 9bfe974cf8b04dde6af0327b35dd590608baf59753f7fc021971afab43194dbe
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, with a primary focus on 'game hack' and 'free generator' lures, such as the URL http://netcdn.tw/app/406889139/como-hackear-coin-master-espaol-game-hack. This suggests a social engineering attack aimed at tricking users into visiting malicious websites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent, likely leading to a download or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/406889139/como-hackear-coin-master-espaol-game-hack PDF link annotation
    • http://lib.icbc-indonesia.org/repository/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-song-id-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-admin-roblox-games_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/big-brother-roblox-exploits-free-download_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-hack-roblox-tycoon-money_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/all-free-clothing-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/hacking-simulator-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/funny-faces-for-clothings-on-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/pubg-uc-2021-online_GM1330123889.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-roblox-games-online-no-download_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-roblox-online-no-download_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/tiktok-download-free-jio_GM835599320.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/cheat-engine-2021-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-create-a-minecraft-server-for-free_GM479516143.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_off00003487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3487 22612 bytes
SHA-256: 50201a45827222ab1a5f754f9ca770c49add7d692dfc17fe6aebd467cc280ad4
font_01_sfnt_off000066df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66DF 18516 bytes
SHA-256: 2733bbd7379f0315f5029cf6e8e3afc196c30f36adae5721920a74f68d8b4415

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