Malicious PDF — malware analysis report

Static analysis result for SHA-256 407e5c5db71858a2…

MALICIOUS

PDF

44.6 KB Created: 2021-06-04 02:11:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 87cd964761ce3b746ebb6a1217dce20d SHA-1: 4d80eb9133c04d7e8ff5dcdf64d88de0605cdeee SHA-256: 407e5c5db71858a25f2b4a1989a036e1fac8672163143a117dcf1515878075ab
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a fake CAPTCHA lure to deceive users into downloading a game hack. The embedded URL points to a redirector that likely serves malicious content or further downloaders. The document's primary purpose appears to be social engineering users into executing potentially harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.online/app/406889139/download-coin-master-apk-hack-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/pokemon-go-free-evolution_GM1094591345.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/rewards-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-generator-no-survey_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051a2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51A2 25152 bytes
SHA-256: f833046fe82b97966e28f6d670c83e22cf48a674f9c4da70c5f46ee97ce62435
font_01_sfnt_off00008b29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B29 18472 bytes
SHA-256: 889c97ae1e8c5f6287d7e9e9a77de81d4c7f2c24e7ca8efa3945bbdf42481e01

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