Malicious PDF — malware analysis report

Static analysis result for SHA-256 751e91ba22f73bdd…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 11:35:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e2a0de519a1aae01fda9f94fab7a4ef6 SHA-1: c31f9d20e6e5f2877d88538780524c4bfec42c8a SHA-256: 751e91ba22f73bdd9f0efc853f3a216a8ee26800a7d9067d24cf3c921037e9f9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to 'netcdn.tw', which is flagged as a lure for free game hacks. The document body and heuristics indicate a deceptive attempt to redirect users to potentially malicious content. No scripts were extracted, but the presence of embedded URLs and the 'game hack redirect lure' heuristic strongly suggest a phishing or scam attempt.

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/431946152/free-roblox-2021-no-virus-game-hack PDF link annotation
    • http://www.opac.stieimalang.ac.id/repository/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-high-school-life-hack_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-with-points_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/minecraft_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-hack-roblox-accounts-2021-august_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-online-roblox-download_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-free-spins-2021_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_off0000304c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304C 22276 bytes
SHA-256: 48f5a39ba4ffe54ea6aeab0aebfa118da4424b4224608b72b67239ade3228277
font_01_sfnt_off000061b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B7 19448 bytes
SHA-256: d2849e6fe98c15d4f222568936ff038649bf57b52d8798fbf2271ec6652e1754

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