Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ec1c848764c29b…

MALICIOUS

PDF

34.9 KB Created: 2021-06-27 16:33:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a4774791a169ea82eac41920a3277fe2 SHA-1: 465b03f01c5ab5d6a1a597b91d48e70ddbd5130a SHA-256: 12ec1c848764c29b4d83ac2c2aee4fa61f5f3c0cd6370f00c0beaba74db40f68
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.co/app/431946152/how-do-you-get-free-skins-on-roblox-game-hack PDF link annotation
    • http://library.umuslim.ac.id/repository/free-robux-without-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-super-power-training-simulator-free-vip-server_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-can-you-upload-shirts-for-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-free-items_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-robux-no-survey-no-online-generator_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/www-robux-us_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/minecraft-free-play-no-download_GM479516143.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_off00002f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0F 22512 bytes
SHA-256: d63eabdc79ad94476640c89a313803fea5ecfcabaff75557b2eaa015423517b9
font_01_sfnt_off0000615f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615F 19676 bytes
SHA-256: bf449a17cc5972bdd6926438ded4c6c4b437e7566e856578cdc00f351a36f7b7

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