Malicious PDF — malware analysis report

Static analysis result for SHA-256 65ca170c5be5b5fb…

MALICIOUS

PDF

36.5 KB Created: 2021-05-23 03:42:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: acb7407537d27063fe4414eb05517882 SHA-1: ac980f243c387dc43921ad597eaa5e54de7d70f0 SHA-256: 65ca170c5be5b5fba6a01416d61e5bbc606ba5d2f58a38686e5ad8281d00de1f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or free generators. The primary lure URL is https://netcdn.xyz/app/479516143/how-to-get-minecraft-for-free-on-xbox-one-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/how-to-get-minecraft-for-free-on-xbox-one-game-hack In PDF document text
    • http://rexingen.info/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://rexingen.info/images/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://rexingen.info/images/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://rexingen.info/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://rexingen.info/images/free-spins-coin-master-ios-2021_GM406889139.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_002_off000033e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33E7 25176 bytes
SHA-256: 470ce66ad8136f67e6c13d18ea579f1efc05e76a159a3112660dcebaf9d3f0ea
font_01_sfnt_off00006c9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9D 18472 bytes
SHA-256: 63446f7755945d37ec8b97d22fda434cb08cbf4c61a02f7f94d2af605f03b611

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