Malicious PDF — malware analysis report

Static analysis result for SHA-256 4946cbe5a93a4a2b…

MALICIOUS

PDF

43.4 KB Created: 2021-05-17 14:00:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0b7eba7fa9c30b883747d020542654d9 SHA-1: 75dd8b29e8e6da4977f5c57e97db554272bb3b75 SHA-256: 4946cbe5a93a4a2b66c25e2838dd9465dd0f57c7ddbbc3846e68a38582cab1c9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency generators. The primary lure URL is https://netcdn.xyz/app/431946152/how-to-get-free-robux-by-playing-games-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at driving traffic to potentially malicious sites, likely as part of a phishing or scam campaign.

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/how-to-get-free-robux-by-playing-games-game-hack In PDF document text
    • http://cosver.eu/images/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://cosver.eu/images/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://cosver.eu/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://cosver.eu/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://cosver.eu/images/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://cosver.eu/images/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://cosver.eu/images/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://cosver.eu/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://cosver.eu/images/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • http://cosver.eu/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://cosver.eu/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://cosver.eu/images/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://cosver.eu/images/roblox-free-robux_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_off0000487b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x487B 26696 bytes
SHA-256: 6fe71aa3b0dffd2ed15892580aaae920c720d16b3ea8ba09a10e0ef3e1046c11
font_01_sfnt_off000083b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B0 19588 bytes
SHA-256: 4959be52701d88ef79c98b835575558ad206ad5c377459138293e90af74f97c3

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