Malicious PDF — malware analysis report

Static analysis result for SHA-256 38bdd6f50947f230…

MALICIOUS

PDF

42.1 KB Created: 2021-05-17 23:47:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5d971627853e437b6dedbd0819531f21 SHA-1: df8092b37ec185836b2067693176cbf4cc4a5ebd SHA-256: 38bdd6f50947f2304516a6e9ef6fab0999a28602df0f34ad4669ebdaad12278d
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/406889139/coin-master-free-spins-bit-ly-game-hack PDF link annotation
    • https://zd407.com/ocean_shop1/admin/upload/files/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/minecraft-client-download_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-link_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-coin-master-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a3e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A3E 25588 bytes
SHA-256: 957c2a38fde999e2d3d0cfc4f00d420194d4a916a1337ef82035adb8f56447cc
font_01_sfnt_off00008252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8252 18280 bytes
SHA-256: 30193a21741cc5402413da2ce8c3dbb562d342d001498cd3d21d10b4bea75843

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