Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f490ae3d9241884…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 13:46:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 941809032373ceecd4cc77e0fa22bb71 SHA-1: a7ad825a3b444b05e002c0faf7eeceadc3c3a2f2 SHA-256: 8f490ae3d9241884199176f24f52d438a33f12c6a27b9a6b1081831d391e7a50
202 Risk Score

Malware Insights

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

The PDF document contains multiple lures related to game hacks and free generators, including a fake CAPTCHA and a download button, to trick users into clicking malicious links. It impersonates brands like eBay, suggesting a credential phishing attempt. The embedded URL 'https://netcdn.online/app/431946152/jailbreak-roblox-hack-game-hack' is a primary indicator of this malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 7

  • 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
  • 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
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/431946152/jailbreak-roblox-hack-game-hack.
  • 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/431946152/jailbreak-roblox-hack-game-hack PDF link annotation
    • https://library.sdksantamariabwi.sch.id/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/robux-survey_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/how-to-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://library.sdksantamariabwi.sch.id/repository/free-coins--spins-coin-master_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
stream_004_off0000516d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x516D 25104 bytes
SHA-256: 331a24ca419e0b8302bdcf98bc13d1329e1e022a71ee4e3f3916ea7744152aa7
font_01_sfnt_off00008ab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB2 18468 bytes
SHA-256: 47180ef6fd58f08eabdcf8de8850cf434555edaa977bcc29afa6d0c928aef64e

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