Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2fe1da31cdc36c1…

MALICIOUS

PDF

33.7 KB Created: 2021-06-17 16:53:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: daecc09480b86c304a99df48a2f4d2f2 SHA-1: d3e837f60c5f6dcef19a77a3b28817256a7b44cd SHA-256: c2fe1da31cdc36c19e7716e57e3508a7b17338c83158ad0e0a64ac66ebd68413
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/pison-club-roblox-free-robux-game-hack PDF link annotation
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-spins_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/royal-navy-ships-free-models-roblox_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/roblox-bots-free-game_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-get-free-robux-in-adopt-me_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-hack-roblox-accounts-using-inspect-element-2021_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/how-to-get-music-boi-on-roblox-hack_GM431946152.pdfIn PDF document text
    • http://stmb-multismart.ac.id/perpustakaan/repository/coin-master-hack-lost-world-2021-com_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_off00003028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3028 21332 bytes
SHA-256: f855d0bd547f8d075f3551d19dc00a9f568842d46e48c6719c2b93ca61811571
font_01_sfnt_off00005eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB4 19064 bytes
SHA-256: 3e3800fd3814eb6ab2b70441bbdd49f8927dc10fd7c2a5c561bd78d4429f9442

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