Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f1dc73c4eab2f3…

MALICIOUS

PDF

44.9 KB Created: 2021-05-12 17:35:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f1bcd9ad4babfed5ba8c3c49d592f402 SHA-1: 74690561780fd22dc44c78129bce4393bd512ca3 SHA-256: 89f1dc73c4eab2f3e954bde4723e5d5dd40c5d79794be191a1ed3ac178e83348
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs that point to known malicious redirector infrastructure, specifically `https://netcdn.xyz/app/406889139/free-spins-coin-master-site-www.quora.com-game-hack`. The document body and heuristics suggest a lure related to game hacks or cheats, aiming to trick users into clicking the malicious link. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/406889139/free-spins-coin-master-site-www.quora.com-game-hack In PDF document text
    • http://cosmosdawn.net/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-tips_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/robux-xyz_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/robuxfree-con_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://cosmosdawn.net/images/card-hack-for-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
stream_003_off000048f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F9 24456 bytes
SHA-256: f08a556b0298ec8509e7824f3bd18ecd26fbb51bc68980f9801b9ac3085a4f8d
font_01_sfnt_off00008141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8141 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008af3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF3 18884 bytes
SHA-256: bb00696f4b16c794428e45170a4ccec074263e1d5dc5fc7380943e32f5bacec9

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