Malicious PDF — malware analysis report

Static analysis result for SHA-256 110f5a06916b3c9b…

MALICIOUS

PDF

36.6 KB Created: 2021-07-05 23:00:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 8c40d4971cd487f25bcdddda2ba6d620 SHA-1: cf13c47bafdea6d2db7a9fcc095da56accf4eadc SHA-256: 110f5a06916b3c9bede047a33720749d5d69b21633459a2657b74cead7f8742f
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-free-spins-link-download-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id/repository/how-to-hack-eviction-notice-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/premium-membership-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-faces-on-roblox-phone_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-steal-a-roblox-account-with-hacks_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-bc-free-download_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/cone-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/hspart-imahsimp-yhsbatch1p-pastebin-free-robuxtype-batch1q20212021shq_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/hacks-for-free-robux-on-roblox-no-human-verify_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-hack-tool-download-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-hack-trick-2021_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_off00003745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3745 22880 bytes
SHA-256: f4f40e138ab10f8e286161e3d7af69261a683d61738976d78d23c39ba06f7f10
font_01_sfnt_off00006aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA7 18924 bytes
SHA-256: a4bb17e2b546a4d7fe34b124958f87fb40140c6e90ac4756c30edd8d3bfebad3

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