Malicious PDF — malware analysis report

Static analysis result for SHA-256 641e302751e3b912…

MALICIOUS

PDF

46.4 KB Created: 2021-05-11 01:07:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4ea278c636f34c484a2e85976e5b51eb SHA-1: d760ab9ea09aa7c37e86e4e2f3aa92284495edd0 SHA-256: 641e302751e3b912de0e2214479a5c89f9e67319cbac4351bd8cba33c94cd92b
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains embedded links and a visual call-to-action button, strongly suggesting a lure to download a malicious application. The primary URL, https://netcdn.xyz/app/406889139/coin-master-hack-version-3.3-2-game-hack, is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to 'Coin Master Hack' and the malicious URL, reinforcing the phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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/coin-master-hack-version-3.3-2-game-hack In PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-coin-master-account_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/robux-online_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ba1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BA1 25584 bytes
SHA-256: 9161946f0c18d690fbac9f23d6e5e8e885a939bf459deaee02667492c249b552
font_01_sfnt_off0000879a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x879A 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off000092c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C4 18216 bytes
SHA-256: 85fbb5d6a76596e79f7a7321391a7393885aeff782a50940295d9e3682a9b399

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