Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e12c51d6a970383…

MALICIOUS

PDF

44.3 KB Created: 2021-05-12 05:33:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: defd2a0087e6bb56a2e93c4239ec905e SHA-1: 8e5bf91bf96a72171550beaf9c5f1cc9b54442cf SHA-256: 0e12c51d6a97038396944a736f821dafe22b78777d7564ca6277972c5b3e105f
142 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 6

  • 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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/free-printable-roblox-images-game-hack PDF link annotation
    • http://111.68.26.74/widyapustaka/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfPDF link annotation
    • http://111.68.26.74/widyapustaka/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-games-on-roblox_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_003_off00004bf0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BF0 26200 bytes
SHA-256: 84bd50809288b18022d4e22fdea1bf26fe9847de14f717bc14f4739c4ddec1dc
font_01_sfnt_off000088ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88AD 19100 bytes
SHA-256: 52df27bb4923834f8c6fcae4232bb166f01d001b7d976c48697583e0b382e25f

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