Malicious PDF — malware analysis report

Static analysis result for SHA-256 11807ca6a9fc0402…

MALICIOUS

PDF

50.3 KB Created: 2021-06-03 10:52:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fba3ab71f4b50e7840361073d0b9c8f6 SHA-1: f1b1c4e713f9664d76ab91c8b4a73374bd7a174c SHA-256: 11807ca6a9fc04026a8fc58ef87e5c96d2a7281dcceac1104b01e912173d77fc
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 0.9769

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 https://netcdn.online/app/431946152/give-me-free-robux-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E58 26120 bytes
SHA-256: 0eaf62a489fa729f5fa89aed82e5406c932c067c060957c4181f6c7ade24b5d4
font_01_sfnt_off0000980d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x980D 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off0000a1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1C0 18444 bytes
SHA-256: 68319dbf483afe81c5a4de3b3f5290fc223d358c0f75f000dd988daf46eb7eae

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