Malicious PDF — malware analysis report

Static analysis result for SHA-256 19ba86c322c71a8d…

MALICIOUS

PDF

45.0 KB Created: 2021-05-17 14:10:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9c52a57f55b6911824adac846f9cf2aa SHA-1: d1c051cd2441347c85cd2a0fb03e25824f3b88b1 SHA-256: 19ba86c322c71a8d3e136fbafc63c0918c7d2318894da968289f63285b3db493
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures. The embedded URL https://netcdn.xyz/app/406889139/coin-master-free-spins-today-daily-links-game-hack is a primary indicator of this malicious redirection. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a social engineering attack aimed at driving traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-today-daily-links-game-hack In PDF document text
    • http://pdapanache.com/images/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://pdapanache.com/images/roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/rbx-robux_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://pdapanache.com/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/free-robux-net_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/coin-game_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/spin-coin_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/coin-master-hack-twitter_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_off000045a2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45A2 29088 bytes
SHA-256: 9846a31f67ac3f7afd84a8911a1cfbb819dd355798461ba62b1cdf96b4ae1d03
font_01_sfnt_off00008288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8288 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008c3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C3A 18652 bytes
SHA-256: 52d597ff4b9023df6b3510b92f87dc1d2329aed0448bc9fa59130058567cb992

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