Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae7e99affe3c9e90…

MALICIOUS

PDF

42.4 KB Created: 2021-05-14 23:39:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: df2e17120748f3abef9c1079ee718242 SHA-1: 7e19630e41cf7e7baecdfb82b3e92b9433ff20c4 SHA-256: ae7e99affe3c9e90b4f4e277abf4b546b1d2f8eb127ea63e3d1377d6ab2d0f70
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'free spins' to lure users. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-2021-free-spins-game-hack. The document body and embedded artifacts suggest a potential for JavaScript execution, although the exact payload is not clear from static analysis alone. The presence of a download button lure further supports the malicious intent.

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-2021-free-spins-game-hack In PDF document text
    • http://itc-nekretnine.hr/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/robux-no-survey_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/fbchampion-com_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/rare-free-links-to-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_off0000487f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x487F 25756 bytes
SHA-256: 320b621ac59d744312c3ca37d30322ae58f584a07786b6e062f9dcfd22ae223d
font_01_sfnt_off0000831d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831D 18288 bytes
SHA-256: 512188fbd9df787eb973cc190579836d1eec1c2cf91c6a5c2e6dbe230c0a69fa

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