Malicious PDF — malware analysis report

Static analysis result for SHA-256 c47c9981fd8eab57…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 19:10:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d5ccbd292a23593d4d459f0a1605029f SHA-1: 3342a9ce6cbf8aeb432e89cc1c297ef2ba73c934 SHA-256: c47c9981fd8eab57f64aec8c21334a7c547e9ffab554da732e475a150562e893
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-cheat-codes-game-hack PDF link annotation
    • http://library.feb.unila.ac.id/rfeb/repository/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-robux-hack-us-2021_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-how-to-get-paid-games-for-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/pokemon-go-hack-free-coins-no-human-verification_GM1094591345.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/tiktok-free-view-iphone-horizontally_GM835599320.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-robux-codes-2021-for-adopt-me_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-hack-robux-descargar_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/bape-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-hack-apk-mod_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-get-free-items-in-the-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-have-bcc-in-roblox-free_GM431946152.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_off000030be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BE 22968 bytes
SHA-256: 068ad5974aea870dd1b9ba7cbfe4a32dd7c4933408d1a2f79e32a734c99cad7e
font_01_sfnt_off0000645d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645D 18176 bytes
SHA-256: 26a62ecd0968cd9678c349310edb0f5f45a7e82b4618ff7b0c0a30910d7092d7

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