Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca5deb3bee52423…

MALICIOUS

PDF

43.7 KB Created: 2021-05-17 21:20:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5695a74fe02e774659831882b59bea29 SHA-1: 5b608e7a8420a3150bbaaecd422fd3589442205b SHA-256: 0ca5deb3bee5242374ba22ff32f6a91bd2762b20c36e093ac018f7560ebd4493
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a call-to-action phrase designed to trick the user into visiting a malicious website. The primary link, 'https://netcdn.xyz/app/406889139/coin-master-hack-app-game-hack', is identified as a known malicious redirector. The document body, though heavily obfuscated, contains references to "Coin Master Hack App" and other game-related lures, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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://facingachild.org/images/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://facingachild.org/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://facingachild.org/images/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://facingachild.org/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://facingachild.org/images/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://facingachild.org/images/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://facingachild.org/images/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://facingachild.org/images/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://facingachild.org/images/mathep_GM431946152.pdfIn PDF document text
    • http://facingachild.org/images/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://facingachild.org/images/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://facingachild.org/images/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://facingachild.org/images/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://facingachild.org/images/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://facingachild.org/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://facingachild.org/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://facingachild.org/images/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://facingachild.org/images/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://facingachild.org/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://facingachild.org/images/free-minecraft-skin-maker_GM479516143.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_off00004cf5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CF5 27056 bytes
SHA-256: 3a8f72d9f1eb77ee43f911d2f3253831367b2ec46fbe1d491281e147652a64fa
font_01_sfnt_off000089b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B1 17892 bytes
SHA-256: f939fda97690d6a809d743b342add8ec97984f5e978608423f32dd39679c4d64

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