Malicious PDF — malware analysis report

Static analysis result for SHA-256 666ba604e6ce447d…

MALICIOUS

PDF

47.5 KB Created: 2021-06-03 12:14:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8ab36200500c4157a5d18950072a1d78 SHA-1: c4275477f51e0ca64fbdb3a5bb2e6db5a3a7f418 SHA-256: 666ba604e6ce447d2c47ae9580a6fac79a7f9278fec07e1db1cb766b6cef9e51
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures related to game hacks and free currency, directing users to external URLs. The primary malicious link identified is 'https://netcdn.online/app/479516143/how-to-get-minecraft-coins-for-free-game-hack'. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to lead users to potentially malicious content or downloads, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/how-to-get-minecraft-coins-for-free-game-hack PDF link annotation
    • http://perpus.wdh.ac.id/repository/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-roblox-wings_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-online-hack-download_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/facebook-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-mod-apk-hack_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/mc-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/get-free-tiktok-followers_GM835599320.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_off0000545c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x545C 25840 bytes
SHA-256: a0baebbf546f8c6908d50f53f058ab8a98589ee39d24b623616eb1acef9b8e96
font_01_sfnt_off00008e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E71 2912 bytes
SHA-256: fa76cc2dab30b56d5305de71ce949b6adffd6580af2f26905a33966a3200adbb
font_02_sfnt_off0000986d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x986D 17872 bytes
SHA-256: 0037a1fc045e764a0a06593ed58f76bf502c93e6708a03a1db6b693a2071c675

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