Malicious PDF — malware analysis report

Static analysis result for SHA-256 390853adad3af7dd…

MALICIOUS

PDF

34.1 KB Created: 2021-06-27 10:12:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9c76f1b16ac412a0b7ca00f7d233fbf5 SHA-1: bdb7ea3ee1aabe25c976c345e9cc51daf997e0dd SHA-256: 390853adad3af7dd98307a13eaece6b153c4cbe9a559ca1521977784bd1875be
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure for a 'free generator / game hack' that redirects to malicious infrastructure. The embedded URL http://netcdn.co/app/431946152/roblox-aerial-free-game-hack is associated with known malicious redirectors. The document body and heuristics indicate a social engineering tactic to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-aerial-free-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-big-brother-cheat_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-robux-hp-notebook_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-roblox-shiny-charm-for-pokemon-brick-bronze_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-how-to-execute-scripts-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-hack-someones-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/e-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-anomaly-breach-cheats_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-no-human-verification-or-survey-no-email_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-cheat-in-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-spins-coin-master-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
font_00_sfnt_off00002f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F43 22272 bytes
SHA-256: 140f18f6685e976145b699e8c7d18eef2afc79112a808482c7eacb08152da000
font_01_sfnt_off000060f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F1 18768 bytes
SHA-256: d7879abdddc933da8f4b9ebc75ba74ad6ea5fa273febe6af3f1dab1decb100c2

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