Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c2b2c86a0ef74aa…

MALICIOUS

PDF

43.9 KB Created: 2021-05-16 08:13:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5e48ef09e8736bc43b2a2e9fd6355b0e SHA-1: 26cc5d3644f031202e6a58aebc51d7ff30ca3900 SHA-256: 5c2b2c86a0ef74aaaddc1e48dd07e4894903f995cace9c03777a6dfb982770e8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting "free exploits" and "game hacks" for Roblox. The primary lure URL is https://netcdn.xyz/app/431946152/roblox-free-exploits-game-hack, which is identified as malicious infrastructure. The document body, though heavily obfuscated, contains references to this URL and other similar lures, suggesting a phishing or scam attempt to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/roblox-free-exploits-game-hack In PDF document text
    • http://ralf-gryga.de/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://ralf-gryga.de/images/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://ralf-gryga.de/images/free-robux-no-apps_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_off00004aac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAC 27916 bytes
SHA-256: 131c8eab76521c717c0c857145081146831a3741d79571bb6371520b3f648576
font_01_sfnt_off00008951.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8951 18348 bytes
SHA-256: 6c925dd72bfdbeb9e5985c11867b62b97a75752c64c0caf4da45c40d6edb98e2

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