Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba9bee2be772c2d7…

MALICIOUS

PDF

47.0 KB Created: 2021-05-10 23:30:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b650c1e371c85b0abcdda24eecf5194c SHA-1: 4b1a2072598e6c24e706476443e7f67e951539e3 SHA-256: ba9bee2be772c2d726980f25eda0c65c915674281ffd500001cf281493b4a9dd
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 0.8948

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.xyz/app/431946152/free-robux-generator-for-roblox-2021-game-hack PDF link annotation
    • http://stikespantirapih.ac.id/home/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/robux-offer-wall_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.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_off00004b85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B85 26376 bytes
SHA-256: 0161822651c317f4cf51850f304182b6cbc9607058e58f244ed5992bc78a9c32
font_01_sfnt_off0000864e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x864E 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000935f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x935F 18820 bytes
SHA-256: ebe9c90542e8fe2fea15c90130dc88571bff9717049b6ef0e566bae53a322baf

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