Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86222b69229ec8d…

MALICIOUS

PDF

42.1 KB Created: 2021-05-13 05:43:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ae6375a869f8d5ea1a4f25eaae9a8580 SHA-1: 2db0429bf4c4e7389877bc9065261a49c4bbc6bf SHA-256: e86222b69229ec8d71db41d9e750cbb71a16842f0fdcfdba7414566f72410807
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users with lures related to game hacks and free spins. The primary link, https://netcdn.xyz/app/406889139/coin-master-free-spins-link-blogspot-today-game-hack, is identified as a malicious redirector. The document body, though partially corrupted, contains references to game-related terms and the malicious URL, reinforcing the lure. The presence of numerous embedded URLs pointing to similar game-hack related content 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-free-spins-link-blogspot-today-game-hack In PDF document text
    • http://zercalo.org/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://zercalo.org/images/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://zercalo.org/images/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/robux-earning-websites_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/robux-place-rewards_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://zercalo.org/images/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • http://zercalo.org/images/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://zercalo.org/images/how-do-i-get-free-robux-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_off000047ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47FF 25024 bytes
SHA-256: 813557a77b386df76ec55c0bd30038dd239ab3f7b72c9c9f8c6b6eaea65e2f11
font_01_sfnt_off00008020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8020 18988 bytes
SHA-256: 2b06b552feb9fdd10e7730fb6ea803097d4340a2e9acfe2d77736b6ed3bd8bee

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