Malicious PDF — malware analysis report

Static analysis result for SHA-256 9906ef9f9fcd2e57…

MALICIOUS

PDF

46.6 KB Created: 2021-05-11 00:31:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2ea14e6c3e468ddd475e94db9b26616b SHA-1: 15a543ed70b64c17238fe44335a1a71adaf09cdf SHA-256: 9906ef9f9fcd2e578706051aa6634a7eacce0bf5d270f772864030ec1d8a3f41
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, specifically 'https://netcdn.xyz/app/406889139/i-can't-get-free-spins-coin-master-game-hack'. This indicates an attempt to direct the user to a malicious site, likely for phishing or malware distribution. The document body and embedded URLs also suggest a lure related to 'Coin Master' game cheats or free spins, a common social engineering tactic. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/i-can In PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/earn-roblox_GM431946152.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.natconveyors.com/uploaded_files/userfiles/files/coin-master-free-spins-links-2021_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_off000053a1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53A1 24140 bytes
SHA-256: 0b77634f831a664d94803c276f1fd570d7013505f3fa9abefddca890acf9d7dd
font_01_sfnt_off00008aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AAE 2944 bytes
SHA-256: fcfcd28869b8d6c7503d63ed8d48371ec5b580fea2733193e2acbb82b3d30a76
font_02_sfnt_off000094d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94D8 17952 bytes
SHA-256: ff0c2fd87def8c3d08bc052d35a059552b69b6ff80e738d461809d40e2b5bde5

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