Malicious PDF — malware analysis report

Static analysis result for SHA-256 1748327a6d8aca7a…

MALICIOUS

PDF

43.7 KB Created: 2021-05-16 07:52:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 52305992685bc83c6d2823cd083d24ce SHA-1: 78297b9523cce52b7fd549acf70f511d006d751e SHA-256: 1748327a6d8aca7ada31761d3895f48dceea36a7ab088c34216f90a080a51bd2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically promoting game hacks and free spins for popular mobile games. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-free-spins-link-download-hack-game-hack, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to this URL and similar lures, suggesting an attempt to drive traffic to potentially malicious sites that may host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-master-free-spins-link-download-hack-game-hack In PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/daily-spin_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/coin-master-hack-version-2021-download_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/cm-daily-spins_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/wurst_GM479516143.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://elearning2.man1kotaprabumulih.sch.id/__statics/gudangsoal/files/roblox-sued_GM431946152.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_off00004d35.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D35 25084 bytes
SHA-256: daf8ae92c54638bf49d4651959b6728b41c381c7bf301e9a69e144c5f522987e
font_01_sfnt_off00008789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8789 18636 bytes
SHA-256: c1ec4201564ac412151aee87dd7e29d753873e3095a9b57a5834a311c08c0525

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