Malicious PDF — malware analysis report

Static analysis result for SHA-256 52a9369f1b4ebf62…

MALICIOUS

PDF

34.5 KB Created: 2021-07-09 19:23:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 548d0c049b64443332efd8c84fa73f62 SHA-1: adacba85b070244243a60f4363891ad37dd14b9b SHA-256: 52a9369f1b4ebf6252f46bc819f8b7c8d9faf230f8f478c4d382315b6db67cb0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains and pages that promise game hacks and generators, indicating a social engineering lure. The heuristic firings confirm these links point to malicious redirector infrastructure and a game hack lure. Although no scripts were extracted, the embedded URLs and the nature of the lure suggest the document is designed to lead the user to a malicious site, likely for further exploitation or malware download.

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/406889139/moonactive-coin-master-game-hack In PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/robux-scam_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-free-roblox_GM431946152.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://mansatupati.my.id/__statics/gudangsoal/files/free-spin-link-coin-master_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
font_00_sfnt_off00003241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3241 22644 bytes
SHA-256: 12dc85bfa94ef9faf2f65d76159679688b15d95761d92cda9fd04a81c50092d2
font_01_sfnt_off000064f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F0 17948 bytes
SHA-256: 97859170db8728f6d44133b3bf898116883bb6069593925494fa44c66d83b8d9

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