Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f26dec4b0a70038…

MALICIOUS

PDF

33.8 KB Created: 2021-06-28 03:41:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 469f9bcb40e12024618a6b5d2eaec510 SHA-1: 1d810d8858653507b661eb687d38750b36c083fd SHA-256: 2f26dec4b0a700388c5e83b9c259051fa806793866fb334831d00ccf15c8df1e
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/roblox-prisoner-life-speed-hack-game-hack PDF link annotation
    • https://pustaka.mic.sch.id//repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-redeemable-roblox-cards-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/will-tiktok-free-download_GM835599320.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-bc-hack-download_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-robux-live-stream_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-free-pokemon-clothing_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-hack-server-in-roblox-script_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-robux-off-of-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-get-the-kitsune-for-free-roblox-farm-world_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/rc8-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/take-anyones-robux-robuxian-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-robux-accounts-2021_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_off00002d62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D62 22116 bytes
SHA-256: a21a7f8c75d2e74db4243bac6b5d3e0aa2d7c70c7a955b166c367eb33ae5ed4a
font_01_sfnt_off00005e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E41 19280 bytes
SHA-256: af8eb3ab294152dadf07e9d72b91642f6219a36d81a500fd3fbf0335a7e10ed9

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