Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f14611b8837742d…

MALICIOUS

PDF

43.2 KB Created: 2021-05-13 09:02:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4af8e1a5d1e6fb57de85a643286fd586 SHA-1: 5fe4661d32c60170f04d9863e98e6768abd593b3 SHA-256: 1f14611b8837742d6dd862519040352ceb097345c825daf76a50b5aee749dee7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting "free Robux" and game hacks. The primary link, https://netcdn.xyz/app/431946152/free-robux-no-human-verification-or-survey-2021-game-hack, is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering lure designed to lead users to potentially harmful content or further malicious downloads.

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/free-robux-no-human-verification-or-survey-2021-game-hack In PDF document text
    • http://library.imz.or.id/repository/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-hack-download_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_off000049f3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F3 25444 bytes
SHA-256: fc2b053ac9e2e22e8de3542507defedbd97e6bd56bb46841babbb020c3bf1ec4
font_01_sfnt_off000082a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A5 19556 bytes
SHA-256: 08b2a18d96b3566ec838f0e87c4bb916e955b8f8af04b9064418114d078945b8