Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4595561cb8c5a49…

MALICIOUS

PDF

44.4 KB Created: 2021-05-16 00:15:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e3a4fd15f387552ebd0f31e00e3e9d6c SHA-1: a132c5e10c71640c9a44dad167ad8a8efd959c63 SHA-256: a4595561cb8c5a49cd247bc5e5aff434eb2f1990dc01fe6d78a511ac059c4949
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that point to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary malicious link identified is https://netcdn.xyz/app/479516143/how-to-get-minecraft-java-free-game-hack. The presence of these links and the ML classifier's high confidence score indicate a strong likelihood of malicious intent, likely for distributing further malware or conducting phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/479516143/how-to-get-minecraft-java-free-game-hack In PDF document text
    • http://akvamaster.com.ua/images/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://akvamaster.com.ua/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/free-robux-master_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000485a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x485A 24764 bytes
SHA-256: fd8999f892804a5d9e53ce52785c537d0b80b14e59306fb9b6bb4077e2695565
font_01_sfnt_off000080cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80CF 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028
font_02_sfnt_off00008b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B41 18152 bytes
SHA-256: f45ec97da20a8e70f6e7437c3ced33d3bcbd99aef5af4daf3be0ff08d51a9e58

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