Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c2dda3800ef6357…

MALICIOUS

PDF

49.1 KB Created: 2021-05-19 01:33:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 536c9843366aa974d0467f85f2be14bc SHA-1: d85457da9fdd605b37870bd3fbfa10dc65c0e3fe SHA-256: 9c2dda3800ef6357deb25331193630ee35abf9c4958b69c2420810b6dc325084
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'generators'. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-hack-2021-download-game-hack, which is associated with a 'free generator' scam. The document body, though heavily obfuscated, contains references to similar lures and the authoring application suggests it was generated programmatically, likely to host these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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-hack-2021-download-game-hack In PDF document text
    • http://fia.ub.ac.id/katalog/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/claim-robux_GM431946152.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/getrobux-ninja_GM431946152.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://fia.ub.ac.id/katalog/repository/coin-master-hack-without-human-verification-india_GM406889139.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b86.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B86 25384 bytes
SHA-256: 52846da23762923f526d67ab783fd8f41b98d35613a7d3d3a766c0976e147dfd
font_01_sfnt_off00008422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8422 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off000091c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91C2 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB1 18696 bytes
SHA-256: 01e33fa384fcd9559826a4aa1de189e20085b3e2fa6b70097625b29721cffd1e

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