Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e530c650be6199…

MALICIOUS

PDF

44.3 KB Created: 2021-05-11 18:01:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 442f6e0068886476d02fab52ece9d31a SHA-1: 9f14dc26001c1cb9213ea56aae6dad60de32dc38 SHA-256: 58e530c650be6199aa14802ff90dc22e7a8c21279ee00f792a00dcd3aa0bd13a
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 0.9980

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/how-to-get-free-robux-easy-2021-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-earner_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn 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
font_00_sfnt_off00004aff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AFF 26776 bytes
SHA-256: 57c45c6014481dc3652cdb78de1c6ca5f4c82bfab0783ae105710ece736fac3e
font_01_sfnt_off0000884e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884E 19092 bytes
SHA-256: b4f5bd8c8985fe06cb8cafea7c6a35db41ab3230d9b691422e9309a9df735677

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