Malicious PDF — malware analysis report

Static analysis result for SHA-256 271b46e7c8a8745a…

MALICIOUS

PDF

34.9 KB Created: 2021-06-18 10:35:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5238aad154c09aac84a3f209ef1075f1 SHA-1: 95f26a7edda0d7da62299cb79a534792db4f23b1 SHA-256: 271b46e7c8a8745ac2e2a56fc796df2889996fb955cb6f555669ba9fc9c64a50
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generators' or 'game hacks' for popular games. The primary malicious URL identified is http://netcdn.co/app/431946152/cool-avatars-on-roblox-for-free-game-hack. The document body and embedded URLs suggest a phishing or scam attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of multiple malicious redirector links indicates a high likelihood of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/cool-avatars-on-roblox-for-free-game-hack In PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/free-robux-generator-com_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/free-shirts-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/god-mode-hack-roblox-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/roblox-money-cheat-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/comment-avoir-des-robux-gratuit-sur-pc-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/followers-bot-free-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/je-de-hacking-sur-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1nganjuk.sch.id/__statics/gudangsoal/files/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D0 22332 bytes
SHA-256: 2c0a9a446117bf997896c77eb080e409461063eeb3b1b3a51e2ff3c50cfc6424
font_01_sfnt_off000063a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A3 18868 bytes
SHA-256: d5404f694f7fcf7c9d160a33498dcf511e6e77added6852b3c36dd380ea60b52

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