Malicious PDF — malware analysis report

Static analysis result for SHA-256 d380e2ac3595d745…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 09:24:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 58fd763f59c517c1bfaad8d7bfb7939d SHA-1: a5dd4bca813410348586b70577c01190e57cc554 SHA-256: d380e2ac3595d7455f74929a771cec7d4d93570ac197770f5d3e140d4595f548
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 0.9865

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/479516143/free-minecraft-worlds-game-hack PDF link annotation
    • http://perpus.wdh.ac.id//repository/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/are-pubg-uc-available_GM1330123889.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/get-robux-today_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/pubg-uc-top-up_GM1330123889.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-coin-master-spins-2021_GM406889139.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_004_off000050cb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50CB 24568 bytes
SHA-256: f80df013748280a10cee0766041316177905048aa8aa087cba8b1279a6a6cad7
font_01_sfnt_off00008856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8856 18156 bytes
SHA-256: 664c7195a075aff6dcec565529a8f8eee0b73719923e2c76767f815b88d63ca4

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