Malicious PDF — malware analysis report

Static analysis result for SHA-256 daed0e43bf4834b0…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 21:12:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0c48f05598a420e6062cc260be838818 SHA-1: 4a8facf05435290acb6cd30ff7e5a7cf8095cd0c SHA-256: daed0e43bf4834b020a5c1fffca22ea7d448bfc66e9e6d046104f2e55c312f46
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-hack-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hacking-codes-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/tiktok-free-view-links_GM835599320.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-anime-skins-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/10-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-attack-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/tiktok-followers-generator-free_GM835599320.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-hack-download-pc-booga-booga_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-spin-ml_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_off000031af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31AF 23120 bytes
SHA-256: 1d80c085ac51e1a7bb45870873b80deeb3e7657cd63e04003d56ec40b82da28d
font_01_sfnt_off00006599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6599 18924 bytes
SHA-256: e987de95c71b54d77bff4d31366d2d96c0c1c0c84cc5d45c6fa9b96ee99b38ec

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