Malicious PDF — malware analysis report

Static analysis result for SHA-256 100ab152500cb325…

MALICIOUS

PDF

35.7 KB Created: 2021-06-19 09:04:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7e1782a5b82325bfac24319ede148c23 SHA-1: aa24994c1ea6c40315417ca0c40b4384a3491e10 SHA-256: 100ab152500cb3257ddaed9ba2763f8089b669a21a10b4c6190959fab38a336b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to 'free generator / game hack' and directs users to a URL that promises free Robux. This suggests a social engineering tactic to trick users into downloading a payload. The ML classifier also flagged this PDF as malicious with high confidence.

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 http://netcdn.co/app/431946152/download-free-download-how-to-buy-free-robux-game-hack PDF link annotation
    • https://www.liputanbali.com/assets/CKImages/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/spin-coin_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/microsoft-roblox_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-coins_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/minecraft-login-free_GM479516143.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-spins-for-coin-master-2021_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
font_00_sfnt_off00003398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3398 22420 bytes
SHA-256: d49f31c6e510243dd660878ffce4ff373d8d2b0d11aa73db471ac59e6d81656d
font_01_sfnt_off00006565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6565 19476 bytes
SHA-256: 793f2695044bd4518b5324feb606894b840b2a3ed41f4cc8f963b9aaa0c9feed

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