Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b3c30232cda97f7…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 23:20:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e65d4aebd718592ffa2aed815a290132 SHA-1: 011de7b26d6805db86974e2dddf32a5dd8a4f348 SHA-256: 5b3c30232cda97f7c3d86ed9f4ab5b6da54c3f4645f044c3ed80b658838ee8b7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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-fun-hack-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hightspeed-roblox-with-cheat-engine-windows10universal_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hack-codes-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/a-roblox-hack-to-get-all-money-in-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-any-roblox-group_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/i-has-cupquake-roblox-he-cheated_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-weapon-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/world-zero-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/are-any-roblox-games-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-urbis-hack-script_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hoot-join-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-programers_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
font_00_sfnt_off00003287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3287 22308 bytes
SHA-256: 483179fc47a158971df33d281b6f5fe8fc954490b9180341ae0d8d93b230c224
font_01_sfnt_off000063ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EE 18308 bytes
SHA-256: ec1c450ed3203d9d96c34464c72d7866981f6f15754b5123fb1f2af95b3a0b29

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