Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9d2a2a61ebd2784…

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 21:22:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 16deb704f07d175814bab8a690aa5811 SHA-1: a28dc45b0a7c5320afe559abe183895ef478b41a SHA-256: d9d2a2a61ebd27846e87a14570df8595cb26197a13e2a2b0e91c578f963a8273
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a high-confidence heuristic firing for a game hack lure, directing users to a suspicious URL. The document body and extracted URLs reinforce this, indicating a likely phishing or malware distribution attempt. No scripts were extracted, but the presence of embedded URLs and the lure suggest the document's primary purpose is to redirect users to malicious content.

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-daily-free-spins-and-coins-link-game-hack PDF link annotation
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/free-spins_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/jurassic-world-free-roblox_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/top-10-free-robux-sites-that-actually-worked_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/robux-generator-com_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/on-roblox-how-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/roblox-hack-com-2021_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/real-free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/free-slime-wings-roblox_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/robux-page-free_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/free-minecraft-codes-2021_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
stream_002_off000032df.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32DF 22744 bytes
SHA-256: ecf9dbad8e123c903ca637838afdb1b857013d732f7877cdd1f74d5a387cb1cb
font_01_sfnt_off000065e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E9 18940 bytes
SHA-256: 578c8aa46d1ee6a58c4d80008523fa9b798e9c4b0161552e8dcf6aa6836e1ffc

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