Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ecff7ceb3d991ed…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 20:20:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 695dbd3de35a942b3d124fa49f9fd97a SHA-1: 8c9343f8ebe25d3014f1cfab8ef0e60ee9593387 SHA-256: 9ecff7ceb3d991edbd49063f4c87740a0e7af28cd3dfc93c5fb9302318c85526
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of offering game hacks and generators to trick users into clicking malicious links. The primary link, http://netcdn.tw/app/406889139/coin-master-hack-apk-35-11-game-hack, redirects to a site likely hosting further malware or phishing content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at initial compromise.

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/coin-master-hack-apk-35-11-game-hack PDF link annotation
    • http://katalog.stikesmukla.ac.id/repository/roblox-island-royale-aimbot-hack_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/hack-bunny-hollie-roblox-account_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/get-free-account-roblox-22-02-2021_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-top-battle-games-read-online-free_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/spend-free-robux-cheat-engine_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-dominus-rex-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-ce-cheat-tables_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-codes-in-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/mcpe-download_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-hack-roblox-jailbreak-noclip_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-hack-no-download-no-survey-no-password-2021_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-roblox-exploit-software_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/aimbot-exe-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_002_off00002ecf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2ECF 21980 bytes
SHA-256: a0807481381204b68ac92d12aaa771c321d40aca6c5fd01ee6686cd45f6d1f5e
font_01_sfnt_off00005f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F71 18592 bytes
SHA-256: 7f49051940b6b9efc6132f30ff89e7b8d09fd75ee36cd2478622d195921c531a

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