Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d929b3330d8ee1…

MALICIOUS

PDF

35.8 KB Created: 2021-07-06 07:43:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: cd02a7ebe10fc92020a2e56842e0eb96 SHA-1: eb618d28f52113b4fb64a00b63fb0930950018b7 SHA-256: d5d929b3330d8ee14d79b3ced12f0b95eee674ea0a2b488371ceb0d33c2f7623
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.tw/app/431946152/free-robux-with-no-human-verification-game-hack PDF link annotation
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-gift-card-ins-roblox_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-hacks-for-tablet_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/robux-ios-hack_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-get-free-robux-no-subscribing_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-get-free-robux-without-doing-a-survey_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/hacking-in-roblox-phantom-forces_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/dinosaur-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-roblox-girl-games_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/beyond-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/earn-robux-online-hack_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/zombie-free-zone-roblox_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-legit-free-robux_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-tiktok-like_GM835599320.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-code-roblox-2021_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/hacker-skin-roblox_GM431946152.pdfIn PDF document text
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-hack-20210-robux_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_off000032b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B6 22548 bytes
SHA-256: 826fe050ee0e24a2dbf97310019fd505af2508b86f47938c8a9174c306a787cf
font_01_sfnt_off00006527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6527 19700 bytes
SHA-256: 35e501b9c45e5927f0fc62a5ada2d4fbbc4f1128da3636f490de4bd32383e5b5

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