Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e642e15cc2dbd5e…

MALICIOUS

PDF

42.8 KB Created: 2021-06-03 08:55:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: bd4fe0867cdd886d7a035060b47f28fb SHA-1: 4ddfb79f5ebb7d37f7c9a80123f37863f4988b08 SHA-256: 8e642e15cc2dbd5e64e87aec9c3746eae52464f7f98a10520e8e5b1d84727dc1
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 0.9874

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/406889139/free-coins-and-spins-for-coin-master-game-hack PDF link annotation
    • https://library.um-sorong.ac.id/repository/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/minecraft-tools_GM479516143.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/earn-robux-sites_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/minecraft-net-free_GM479516143.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-free-spins-link-2021_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
stream_004_off00004bde.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BDE 24868 bytes
SHA-256: 0ebcfa71525cb9a298794947c5593b0655e2526863124ff4c48a0dedf83b229c
font_01_sfnt_off00008536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8536 18060 bytes
SHA-256: f1068137021f01f6b5cc3550273fdf5362b49e27ffe305b66dd7920a08d48120

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