Malicious PDF — malware analysis report

Static analysis result for SHA-256 572ca62fc9a7e578…

MALICIOUS

PDF

36.0 KB Created: 2021-06-27 20:54:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8d901c567b9a0f124d88d5c270c159c2 SHA-1: fb5bf8a1c7d7952641f1b809cdaecb0be1070f66 SHA-256: 572ca62fc9a7e5789ae70089be2d4249711f68873d77bd27ce43a5db838debaa
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-cheat-codes-for-robux-2021-game-hack PDF link annotation
    • http://digilib-pps.unja.ac.id/repository/coin-master-hack-apk-july-2021_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-2021-august_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-hack-somone-roblox-unpachable_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-free-body_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robuxs-free_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-hack-someone-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/pokemon-go-free-yveltal_GM1094591345.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3485 22344 bytes
SHA-256: e6adb2719f0f52e8fe5fd355c1d906fc23005412bcf756b1b7d1c8553f9a22c4
font_01_sfnt_off000065f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F9 19636 bytes
SHA-256: 959841620d78f7ed95fa05ee99e0e8be884222af7f76e37a037d566b3b75947a

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