Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a26ee6f98e86904…

MALICIOUS

PDF

46.3 KB Created: 2021-06-04 04:05:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1245b9b10c115c104d81cfad985a5067 SHA-1: 28cf89f2e0cfbf6a701d733cc9648cdbddbec3af SHA-256: 9a26ee6f98e869041eeb17d548baf797d2c2924dd7d6e190064ff800919acacb
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 0.9832

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/479516143/minecraft-xbox-360-free-download-code-game-hack PDF link annotation
    • https://perpustakaan.stifar.ac.id/repository/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/pokemon-go-free-event-box-april-2021_GM1094591345.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/get-more-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stifar.ac.id/repository/robux-matchcomfree-robux_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
stream_004_off000054ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54FF 24944 bytes
SHA-256: dea901c61b5f38670de5089a19302b00bf167e03b35e5b728c0e26b53e9c1500
font_01_sfnt_off00008edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDB 19400 bytes
SHA-256: 30b784ba3b356ec0b4997106bff5d55ef8f2e70b19d5a22bd2903de8139c4554

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