Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c22b6ac9c30e221…

MALICIOUS

PDF

35.8 KB Created: 2021-06-23 10:45:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f38c11b744fd2b392f0c8ac97fc33949 SHA-1: 681b4bb0bf308e7b03b1cb914dce7a7d48d44cbf SHA-256: 1c22b6ac9c30e221467e0f4ab94631657fc74bd1b1b458013d07aa38ceda8755
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document uses a lure related to game hacks and free currency for popular games like Roblox and Minecraft. It contains multiple embedded URLs pointing to similar content, suggesting a phishing or malware distribution campaign. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document may be instructing users to open a password-protected archive, a common tactic to bypass security scans.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://netcdn.co/app/431946152/how-to-get-the-stuff-from-roblox-hack-week-2021-game-hack PDF link annotation
    • http://www.library.gkigadingserpong.org/repository/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/robloxmainacom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-robux-advertisment_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/why-is-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/hack-roblox-money-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-hack-download-no-verification_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-premium-on-roblox-for-free_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
font_00_sfnt_off00003267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3267 22000 bytes
SHA-256: d63cb73200eeab721be0115022d5a6409321b0491e976f379d443f2cda629bf8
font_01_sfnt_off00006341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6341 20256 bytes
SHA-256: 44b66ea415a58dd96d6ddb387f12089188e62d4060beb6938142be037ef69477

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