Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5c750c879c110fd…

MALICIOUS

PDF

45.0 KB Created: 2021-05-14 08:44:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 55c7a78e460190339d8db49519a63eca SHA-1: 6d1319b5f281e9b2bd5a9e66e8a98179826aa715 SHA-256: d5c750c879c110fdad68085e62c546c2da37d92833b8c35d2c0783e220a37e5d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures related to game hacks and generators. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-free-blogspot-game-hack, which is linked from the document body. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or redirection attempt, likely leading to further malware or scam content.

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-blogspot-game-hack In PDF document text
    • https://kinderdam.nl/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://kinderdam.nl/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://kinderdam.nl/images/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • https://kinderdam.nl/images/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • https://kinderdam.nl/images/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://kinderdam.nl/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://kinderdam.nl/images/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • https://kinderdam.nl/images/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • https://kinderdam.nl/images/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://kinderdam.nl/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://kinderdam.nl/images/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://kinderdam.nl/images/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • https://kinderdam.nl/images/fbchampion-com_GM406889139.pdfIn PDF document text
    • https://kinderdam.nl/images/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • https://kinderdam.nl/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://kinderdam.nl/images/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • https://kinderdam.nl/images/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • https://kinderdam.nl/images/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://kinderdam.nl/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://kinderdam.nl/images/como-hackear-juego-coin-master_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
font_00_sfnt_off000049bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49BF 24900 bytes
SHA-256: fbdedd74b9b8497577624651325323c8fae175eb24e23960cba94b8d211c7801
font_01_sfnt_off00008359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8359 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008cfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFB 18464 bytes
SHA-256: 3d1506adb004325b5ad849f11167115e1f90dbd1428f7e6d98779d75984a0c30

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