Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc256dedab3c37c8…

MALICIOUS

PDF

34.7 KB Created: 2021-07-08 00:39:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c797e57a4072b45ea49a5e29325f282c SHA-1: 2e00d483bd91c2318d4fbbbafd2fdbb2343ed999 SHA-256: dc256dedab3c37c82d430af674b2284ad9044eef3b33a163538b4bdfa22acd8f
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to a redirector URL, http://netcdn.tw/app/431946152/can-i-get-free-robux-game-hack, which is flagged as malicious. The document body and embedded URLs suggest a lure for free game items or hacks, a common tactic for distributing malware or leading to phishing sites. While no scripts were explicitly extracted, the PDF structure and malicious links indicate an attempt to exploit vulnerabilities or trick the user into downloading a payload.

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.tw/app/431946152/can-i-get-free-robux-game-hack In PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/simplysarc_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-game-free_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/tiktok-free-update_GM835599320.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000030eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EB 22476 bytes
SHA-256: a186fe1695b74f74127cdbcff24ab8d87ef81789c98f8e3267d6549e8d85e73f
font_01_sfnt_off00006326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6326 18820 bytes
SHA-256: 1482418a342ed3f1ed9b37dd8c37f12d98a52023a9223b967d12e27c0c804d73

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