Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddeb9c977436ac8e…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 23:08:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 509f8a35e30635be68c0cf802611bfef SHA-1: 4e21a35712826a59b9061d4af8fafae5b224304b SHA-256: ddeb9c977436ac8ee871846503d1aabbf0581dda774178918909fb021e65be87
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacking and in-game currency, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and the 'game hack redirect lure' heuristic indicate the document's primary purpose is to redirect users to potentially malicious content, likely for phishing or malware distribution.

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/how-to-hack-roblox-on-mobile-game-hack PDF link annotation
    • http://www.library.smactf.sch.id/repository/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/ccv3-roblox-jailbreak-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-gucci-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/roblox-jailbreak-hack-safe_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/mathep_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/coin-master-support_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/krnl-download_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • http://www.library.smactf.sch.id/repository/roblox-system_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_off00002f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F34 22732 bytes
SHA-256: a5b91e4f603f13c5916e47527f4bab1acb60cdc1835432f9090a8c155ef41d29
font_01_sfnt_off000061b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B5 19136 bytes
SHA-256: c6cfa40e1d917af866a87a81e144bf0d2408366b6fc953e8a0176cb384fbd87c

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