Malicious PDF — malware analysis report

Static analysis result for SHA-256 c933a21f5b4644c5…

MALICIOUS

PDF

43.6 KB Created: 2021-05-15 12:34:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 18d4d080a4b24ab83e5a3e44b7231de5 SHA-1: 26f695bed7234dbf51822a9358101f5e37c206a3 SHA-256: c933a21f5b4644c5178720c4c5ff623081b68981c68d5e75fa321a004ecf5a6a
100 Risk Score

Malware Insights

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

The PDF contains a lure for downloading a game hack, indicated by the document body and a heuristic firing for a download button. It links to malicious redirector infrastructure, specifically the URL https://netcdn.xyz/app/479516143/minecraft-apk-free-download-0.16-0-game-hack, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 3

  • 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/479516143/minecraft-apk-free-download-0.16-0-game-hack In PDF document text
    • http://ohsawamacrobiotics.com/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-100-robux_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_off00004c4d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C4D 25732 bytes
SHA-256: 27d7476e912dae603a44f251cf882e07c430edf386979b1154e998417a45d531
font_01_sfnt_off0000857b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857B 19148 bytes
SHA-256: 143cdc4e5324f1572c7170c4fe37a033449aea51cdd3ec4d91b7fb0cb62456a0

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