Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c3ab4dad2723c30…

MALICIOUS

PDF

48.5 KB Created: 2021-06-03 07:53:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: cac23f7c7d63308e0dd3764c0b8fba2d SHA-1: 6d38c454ec2294ba43e61a0849de3f94d0c95115 SHA-256: 9c3ab4dad2723c301e06aa2dadd3cd7fd99d631c085fd24f605689c879ca6d06
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 0.9796

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/431946152/roblox-vehicle-simulator-speed-hack-script-game-hack PDF link annotation
    • http://perpustakaan.iahntp.ac.id/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/pokemon-go-kanto-free-pass_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-tiktok-followers-without-survey_GM835599320.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
stream_004_off000051fa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51FA 25588 bytes
SHA-256: e2c67e5c2fff6295c2f7302b096a8f9bfcb4c78ede0291d78b0ca9b4eed4625e
font_01_sfnt_off00008d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D91 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off0000977c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x977C 19456 bytes
SHA-256: 3537099cdebfbb06568e5c52756d924395232c4ef19a4e8f54cf913485f88359

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