Malicious PDF — malware analysis report

Static analysis result for SHA-256 70bc896482b230b0…

MALICIOUS

PDF

35.4 KB Created: 2021-06-28 04:59:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9a375fd122cf9c80fa50ae06e08d8e21 SHA-1: ad71f9314a27a5ea25f0597565e460a1ae52ba65 SHA-256: 70bc896482b230b06d38b72803600df3e27a1df81b0099f244a210b63d3a67d0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links disguised as game hacks and free currency generators, a common lure for phishing or malware distribution. The primary link, http://netcdn.co/app/431946152/free-pet-code-bubble-gum-simulator-roblox-game-hack, likely leads to a malicious download or exploit. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-pet-code-bubble-gum-simulator-roblox-game-hack PDF link annotation
    • http://digilib.akperkabpurworejo.ac.id/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/roblox-cheat-wall-glitch-download_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-pink-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/www-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/how-to-hack-roblox-servers-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/hack-obc-account-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-robux-no-human-verification-2021-or-survey-no-scam_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/error-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/robux-hack-no-download-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/free-player-points-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/free-robux-survey-only_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/bad-busiiness-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/roblox-c9m_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
font_00_sfnt_off00003134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3134 22552 bytes
SHA-256: 6cd5a444fe5027675660bb642ed1ad5f155a4d08f410e4d0c313bd2825eb5d78
font_01_sfnt_off000063b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B1 19604 bytes
SHA-256: 220d9311b6bbdcad341cb0a0f9800ad5be353954b14f2d6e5e8d1883ba34083f

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