Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b62b10a4032b99c…

MALICIOUS

PDF

45.3 KB Created: 2021-05-14 20:14:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2b8fbb1a90b32e362dbb105ec7458a30 SHA-1: a0cb92b1df52eb60723c3eb471029b9e8f92ebff SHA-256: 2b62b10a4032b99c471e63d3e56b2aba90fd949a3e2746ecae31ad14daaba4d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, masquerading as game hacks and free generators. The primary lure URL is https://netcdn.xyz/app/406889139/free-spins-october-28-2021-coin-master-game-hack, which is associated with known malicious infrastructure. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting potentially harmful sites.

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 https://netcdn.xyz/app/406889139/free-spins-october-28-2021-coin-master-game-hack In PDF document text
    • http://leigraphics.com/images/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://leigraphics.com/images/free-coins_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://leigraphics.com/images/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/coin-monster_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://leigraphics.com/images/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/robux-no-survey_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/free-spins-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
stream_003_off00004a00.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A00 30472 bytes
SHA-256: 88370cbc3a11249337a54b2f86ba905979edf42750c37be739a147a7aaa093da
font_01_sfnt_off00008ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDB 18656 bytes
SHA-256: ae43edb7d968773fa01f40288fe30e864a12c720900b1687a5763e30cc6382a2

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