Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd6ea7125bce0bde…

MALICIOUS

PDF

48.6 KB Created: 2021-06-04 00:09:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1f464f32bb7506aab4cea3495f473a50 SHA-1: 121d8e46cd030580a0acb5f63d2a7071b47a43d6 SHA-256: dd6ea7125bce0bde7a56d4d89ef38e01f75d915005b4159ceeee7c5939c3ec52
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 0.9796

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 https://netcdn.online/app/431946152/roblox-watch-ads-for-free-robux-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/daily-spin_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-premium_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51A6 26392 bytes
SHA-256: 4fc488e5835828f10b13e46750ff320c966ad87399286bd060d1de30bd9e2e30
font_01_sfnt_off00008f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F79 2828 bytes
SHA-256: a4e15770ab3b920ccbab17816ac2be280610f3f789d7654b00721cdcc5d65b79
font_02_sfnt_off0000992e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x992E 18956 bytes
SHA-256: 545fbb45473672e41f98644822067083eb766d04a521db0abb12aa307e56633e

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