Malicious PDF — malware analysis report

Static analysis result for SHA-256 54619d4fdcef4f5e…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 12:42:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 726dc887abacd0a424d3578ae42599dd SHA-1: 13c5daf48a7c94df9072941645e54762fe3b6c7b SHA-256: 54619d4fdcef4f5e5965f296b7184eceff9a565fcf610ec32150e7d1bc059632
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, masquerading as game hacks or generators. The primary lure URL is https://netcdn.online/app/479516143/minecraft-free-trial-game-hack, which is associated with a high number of redirector links. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/minecraft-free-trial-game-hack In PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-tiktok-like_GM835599320.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/optifine-mcpe_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/strucid-aimbot_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://education.minecraftIn 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_off000050fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50FD 24820 bytes
SHA-256: eafae407f8946e1510329ce23c68e8a8a676a3eec76b44623c31119cd0e98e12
font_01_sfnt_off00008913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8913 17644 bytes
SHA-256: eaa999d9fcd0e41c3411a6787ff304b3b9a642a81f97c4ae06503d53e3265cce

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