Malicious PDF — malware analysis report

Static analysis result for SHA-256 0acd5422464c3ce5…

MALICIOUS

PDF

42.5 KB Created: 2021-05-13 04:39:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8d4ebfa8b48f22ecdf8a9d541d76b133 SHA-1: 9f14d02336d2088abf72006d82b0b23666446699 SHA-256: 0acd5422464c3ce5d698cbbe0916341d83cdc52c7024e9a93a1c932689651138
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 0.9971

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.xyz/app/431946152/roblox-hack-app-game-hack PDF link annotation
    • http://schmittmusik.de/images/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/robux-miner_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://schmittmusik.de/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://schmittmusik.de/images/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://schmittmusik.de/images/girl-roblox-avatar_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
stream_003_off000048dc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48DC 25220 bytes
SHA-256: b4f0b773545a3d0e9c07af8f4e36c9b2668e66333b8d798860ae01e9247caab8
font_01_sfnt_off00008378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8378 18356 bytes
SHA-256: 7cdc4109e76722f5b523df4cd1b295e2212ddbe91aca110ba626f8c95e058f26