Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdaac4c6f1f31efb…

MALICIOUS

PDF

45.8 KB Created: 2021-05-12 18:06:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 01534108b5fea44e527b9ba33e07b8b4 SHA-1: 48503eaa52aadd6a34d0b4d5cb0aaf188ef01ca3 SHA-256: bdaac4c6f1f31efb268ef2567ef50f9e183824363ed3e92c55ba8057708951f7
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 0.9432

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-instantly-game-hack PDF link annotation
    • http://opac.acehresearch.org/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ca7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CA7 24616 bytes
SHA-256: e3d225d1d315932cae16e50c80395dfc0627f04b6fa99e00eb599728e9116684
font_01_sfnt_off0000852b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x852B 3016 bytes
SHA-256: 4c3e2db5174821787a4569c9da4979555510caebd15fb9cea35573c139e242bd
font_02_sfnt_off00008f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8F 18600 bytes
SHA-256: eeb00711cf2e5591db958639ea5d908a8ba1b5c4404aa75c69e8a5349c023cb9

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