Malicious PDF — malware analysis report

Static analysis result for SHA-256 459ea4911e2d9bcf…

MALICIOUS

PDF

48.2 KB Created: 2021-05-17 02:29:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: acc1d5c67a64f9e3514a55beaf8fe3ce SHA-1: b5e8ec12f9c0b5ba95dc35a6a5179ec1ce1cae58 SHA-256: 459ea4911e2d9bcf73d4585f041c7c71fb63550a110edd2b3629f20e6d40ed86
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free currency' for popular games like Coin Master and Roblox. The document body and embedded URLs reinforce this theme, suggesting a lure to download potentially malicious software or engage in phishing. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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-apk-free-download-game-hack In PDF document text
    • http://practicaltech.com/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://practicaltech.com/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/coin-master-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004adf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ADF 25196 bytes
SHA-256: e36b15a9b19432721d9d85b2a4404d08ee202ac48a14286010eb63d37468b6cf
font_01_sfnt_off0000847f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x847F 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off0000990a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x990A 18636 bytes
SHA-256: 352d929b5f45d1d816cf71c40016a6b8bab10c0c0acb2d1be8608963c5a906f7

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