Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb8d5ec1bc38efc…

MALICIOUS

PDF

42.4 KB Created: 2021-05-15 14:42:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9fc6be99e9a90a9a762b0813bafcbfe9 SHA-1: f2c71160b551a4350f0acebcba93368d35238a2c SHA-256: ccb8d5ec1bc38efc93e439df8dee14fc4308bae3d6b192a7765d0cf6c194bbb7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "free generator / game hack" lures. The primary link, https://netcdn.xyz/app/406889139/moonactive-free-spins-coin-master-game-hack, is identified as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites, likely as part of a phishing or scam campaign.

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/moonactive-free-spins-coin-master-game-hack In PDF document text
    • http://www.sbairs.com/datas/files/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/best-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/cute-free-stuff-on-roblox_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_off00004957.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4957 25984 bytes
SHA-256: a7fc9846b59e0fd00c067872bc4ed00800e32764f479540abebf1194fa962963
font_01_sfnt_off00008409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8409 18000 bytes
SHA-256: 525e065cc595701650099d1f547d5a2db26dd24a903bd4cc3081529fc79bef99

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