Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad65a2aeaff4fe6a…

MALICIOUS

PDF

44.3 KB Created: 2021-05-10 22:31:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 28db367c399eb2df2e720f002ece0aa0 SHA-1: 848425d18cd6d08e096a1363f875db54e910e217 SHA-256: ad65a2aeaff4fe6a096c70e1b0e2415783768e165f85f62beef69c5ad7f9e2f9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a "game hack" redirector, specifically pointing to `https://netcdn.xyz/app/406889139/hack-master-coin-pc-game-hack`. This lure is designed to trick users into clicking the link, likely leading to a malicious download or further compromise. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in free game-related items to deliver malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/406889139/hack-master-coin-pc-game-hack PDF link annotation
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/roblox-account-taker_GM431946152.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/generator-robux_GM431946152.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/coin-master-hacks-xyz_GM406889139.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_003_off00004a3c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A3C 24380 bytes
SHA-256: 89b5924fa124ed8d0f83c0a4934f4fc249ce7972072a70d10d6c877227ee4d54
font_01_sfnt_off000081d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D1 2956 bytes
SHA-256: aa05c93583c8bb1ea916fd69c8a28a5c303188c92667d4ae562bb4fa0c3eac9a
font_02_sfnt_off00008bf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF4 17868 bytes
SHA-256: 22b442a55f4ac2138d92a5558ea0ba8cd172fa39c5ed9e426124379d05989e3d

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