Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c04eabdf396f434…

MALICIOUS

PDF

46.8 KB Created: 2021-06-13 15:59:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 87f4710769af0940be6ff2ebc129d9f1 SHA-1: 70056edb6b45a4a9293ad480fc89413f0c8a09fb SHA-256: 0c04eabdf396f434105d5ab294bb63284635ffbaec3867b303043941e427c40e
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 http://netcdn.co/app/431946152/free-robux-no-genertor-game-hack PDF link annotation
    • http://pustakafpsi.uin-suska.ac.id//repository/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-sprite-shir-roblox_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-kicked-when-i-open-cheat-engine_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/roblox-generator_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/get-free-coin-master_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_off00005402.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5402 28300 bytes
SHA-256: 1c54335994b95864652f074e63ef6fcc49032ddcc1ca086ac14beb02eb20988c
font_01_sfnt_off000094dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94DD 18120 bytes
SHA-256: 7411f7181f3f1f6a5e69aa433e1a7fcca03617825dfbdae41aee0528730ef7a0

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