Malicious PDF — malware analysis report

Static analysis result for SHA-256 aef1b7d6e200c0bc…

MALICIOUS

PDF

33.8 KB Created: 2021-06-27 11:57:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3e416d3616e83554c3f19a5f18119440 SHA-1: 10d6b25097edd7e265463a072fa00d42bafb8665 SHA-256: aef1b7d6e200c0bc155257122b8ae755359649dd51a03cf11ddab86f7d912e32
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 0.9980

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/executor-hack-for-roblox-game-hack PDF link annotation
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/roblox-jump-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-robux-working_GM431946152.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/114-hacks_GM479516143.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/roblox-free-lua-executor_GM431946152.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/how-to-get-2-000-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.lorengntb.com/new/public/ckfinder/userfiles/files/free-robux-no-email-no-password_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_off00002fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE5 21496 bytes
SHA-256: efb0dece971532f336991fdea7b4d14f7cb71430093c406a96562b26242def21
font_01_sfnt_off00005ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE1 19064 bytes
SHA-256: 25473184cc67f8249676b0d7f57d960836606b20324e84fc3b69cd1a07d58cb0

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