Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa9f45cb3f095bfe…

MALICIOUS

PDF

41.4 KB Created: 2021-05-17 00:31:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ebc918ff2ea1c3e6baa72228dccddb24 SHA-1: f50c66e71b2b0eb99829c51249f8d1eba48bcc1d SHA-256: aa9f45cb3f095bfe664da924f8f2cc46b781e7a0ecdb3ae3ae55bb7a5447ab29
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as "game hacks" and "free spins". The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-hack-app-game-hack, which is associated with a "free generator / game hack" theme. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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-app-game-hack In PDF document text
    • http://webstan.be/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://webstan.be/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/get-free-coin-master_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://webstan.be/images/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://webstan.be/images/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004879.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4879 25100 bytes
SHA-256: 34458d3e836031645751e83399e7dc4767d97a4fa83e0222a9b5ed1bbfc94d5c
font_01_sfnt_off000080ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AB 17892 bytes
SHA-256: f939fda97690d6a809d743b342add8ec97984f5e978608423f32dd39679c4d64

Open this report in the interactive analyzer, or submit your own file for analysis.