Malicious PDF — malware analysis report

Static analysis result for SHA-256 1034f158b55fe5eb…

MALICIOUS

PDF

44.3 KB Created: 2021-05-15 23:00:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 82f7ea081f5ebe1dd37dce25244b06e1 SHA-1: 6aae04ac10d2cd21e7fe193e8d59838c6451d078 SHA-256: 1034f158b55fe5eb351b2b91e0b3d70e6dce51f43558abab9a811c07bc956938
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically disguised as 'game hacks' and 'free currency' lures. The primary redirector URL is https://netcdn.xyz/app/431946152/robux-survey-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

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 https://netcdn.xyz/app/431946152/robux-survey-game-hack In PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-font-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.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
stream_003_off00004c0d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C0D 27464 bytes
SHA-256: 5d796bd39ff9a94d0163e5dffa0ce4005f60f7e80efc3f6fd4a9253ae82f480b
font_01_sfnt_off00008b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0B 18144 bytes
SHA-256: 6fd5616ad4ce0c30eb6456aaab9f1a40378a031fa4650db50c22e26f1c4f3de9

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