Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c9456aadb0d9abd…

MALICIOUS

PDF

41.6 KB Created: 2021-05-10 21:09:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 445a70736bbc2a6088ded1b691ffdb59 SHA-1: 46ab26ecaaa56eb3e057e296e12f2da191129850 SHA-256: 8c9456aadb0d9abd9122420ad862a689bfc6b2f6b3ce85581a90d4e4a0bcef8c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free generators. The heuristic firings indicate that the PDF is designed to redirect users to malicious infrastructure, likely for further exploitation or malware delivery. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-hack-game-download-game-hack In PDF document text
    • http://kingmusic.pl/images/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://kingmusic.pl/images/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/spin-link_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • http://kingmusic.pl/images/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/robloxmatchcom-free-robux_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_off000047d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47D8 24264 bytes
SHA-256: f5385e317fbbd6e294f863008d8da03c8f9d9a1a5059532ebff72b2e27259337
font_01_sfnt_off00007f59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F59 18556 bytes
SHA-256: 89621ed490658390f1fc014040a62f50e37bffa9e55a8f0811625641fd44cbe0

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