Malicious PDF — malware analysis report

Static analysis result for SHA-256 19d595f3d1b4d05a…

MALICIOUS

PDF

42.1 KB Created: 2021-05-16 15:50:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 63eb943a874c07e03e5557586b0905e2 SHA-1: 6b665dee80ed35395030beeae68f7643e185dd06 SHA-256: 19d595f3d1b4d05a6a448d63be2247e9d979379f8804e120f37df73c964e559d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to known malicious redirectors, specifically promoting game hacks and cheats. The document body, though heavily obfuscated, contains references to 'Coin Master' and URLs that align with the heuristic findings of a redirector lure. The primary malicious action observed is directing the user to external, potentially harmful, websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-website-game-hack In PDF document text
    • http://practicaltech.com/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://practicaltech.com/images/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/roblox-verification_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/master-coin-free_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://practicaltech.com/images/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/robux-robux_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://practicaltech.com/images/roblox-but_GM431946152.pdfIn PDF document text
    • http://practicaltech.com/images/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://practicaltech.com/images/how-to-get-free-robux-without-downloading-anything_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_off000049ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49EC 25420 bytes
SHA-256: 825ad9e6ce9658e8dc60355f68ab1984d5fe3e883becbf73d86643c5f8428793
font_01_sfnt_off00008329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8329 17900 bytes
SHA-256: decb0c413fa85b8530be01f527249ec626c34e53c28067a93855c78243a97237

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