Malicious PDF — malware analysis report

Static analysis result for SHA-256 3898777f72a45fcd…

MALICIOUS

PDF

46.0 KB Created: 2021-05-17 02:31:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ee870edff27f1a65e221fc90cf2f3ef1 SHA-1: 299880b47e82bb16f9f09dcf3c92c5fc6b6b1fbc SHA-256: 3898777f72a45fcd300695337358d186b585068094d5827779aa2d25590bed7c
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 0.9432

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/431946152/codes-to-get-free-robux-game-hack PDF link annotation
    • https://dirigentigiustizia.it/images/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/earn-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-free-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/rewardex-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-redeem-codes_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aa2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA2 26092 bytes
SHA-256: 4dd8591bed6844d65ec7df2f6e9d178fd5135f7b1e9141b47b0cf1a849d9daed
font_01_sfnt_off0000875f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x875F 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off00009121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9121 18292 bytes
SHA-256: c4e16f213ba515826b0fc8bd2adb9a42249615e2a7fe5232f5ebe2d4ec6172c1

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