Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c05b0789b34768c…

MALICIOUS

PDF

35.6 KB Created: 2021-07-05 12:08:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c54f37cbdcaad1aecfac1c94c738700e SHA-1: c51caca8e7d540ec342a3b1bc4c0b61765c91781 SHA-256: 5c05b0789b34768c5c1fe57e61bbc319e7cc8bc0185485d94b6f92283c1052f0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free generators, directing users to malicious URLs. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the embedded URL 'http://netcdn.tw/app/479516143/play-full-version-of-minecraft-for-free-no-download-game-hack' strongly indicate a phishing or scam attempt. Although no scripts were explicitly extracted, the nature of the lures suggests a potential for further malicious activity, such as downloading additional payloads.

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.tw/app/479516143/play-full-version-of-minecraft-for-free-no-download-game-hack PDF link annotation
    • https://perpustakaan.stami.ac.id/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-hack-roblox-on-ipad-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/pubg-uc-20210_GM1330123889.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/what-tiktok-free-views-without-verification_GM835599320.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/rbxdemon_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-homepage_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-hack-version-download-ios_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
font_00_sfnt_off000033b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33B1 22480 bytes
SHA-256: fe391db59a8f11b6632ebaa5350d0ae17add0d11fecd0da7235b9e58cf87f894
font_01_sfnt_off000065d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D2 19184 bytes
SHA-256: 5e32e363d8c65815c6d01de56cc06b1aeed3e4c2338534b38083fd982a037e53

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