Malicious PDF — malware analysis report

Static analysis result for SHA-256 50272bb4fb260e05…

MALICIOUS

PDF

42.6 KB Created: 2021-05-15 06:14:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d9c8c9c8e56779926211f29dff552f76 SHA-1: a060b651cfa8138547d920624465c21457c1f38c SHA-256: 50272bb4fb260e05583e6b2d129aee279097a85212034076c93f661e46050f4b
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 "free Robux generators" and "game hacks". The primary lure URL is https://netcdn.xyz/app/431946152/free-robux-generator-codes-game-hack, which is associated with known malicious redirectors. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

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/431946152/free-robux-generator-codes-game-hack In PDF document text
    • https://hbpbenin.com/images/where-to-get-robux_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/rbx-sites_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • https://hbpbenin.com/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • https://hbpbenin.com/images/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/how-to-get-free-robux-easy_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
font_00_sfnt_off00004811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4811 26412 bytes
SHA-256: 1f1aad98632ca2c03627a326c9091995f7035a29bf7a53e3abd1080c274eb369
font_01_sfnt_off00008364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8364 18520 bytes
SHA-256: a3c42500ab941ca6b3cc9f1b186676fd5f7f9f0c0249e27b539405b68f11e4ed