Malicious PDF — malware analysis report

Static analysis result for SHA-256 533d390128b02dd9…

MALICIOUS

PDF

57.1 KB Created: 2021-06-03 21:51:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ffefa50ba7d73fddea15cfc6cbf8b951 SHA-1: 6bd805ffe889f135825574ece8394a9fa4cbd786 SHA-256: 533d390128b02dd95a64836e4128235e0ba7d9e88a7a2a313d1d7aa2b134ef71
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a redirector service, which is a common lure for phishing or malware distribution. The document body and embedded links suggest a scam related to free game currency or hacks. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9560

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.online/app/431946152/apps-that-give-you-free-robux-game-hack In PDF document text
    • http://library.fisip.upnvj.ac.id/repository/pokemon-go-free-roam_GM1094591345.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/robux-win_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000053a7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53A7 27904 bytes
SHA-256: d372a9d52adeff7fc9e6f110fa963fb2015d8db4c6360ce6435c2bdfd2bf9dc8
font_01_sfnt_off000094b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94B5 7420 bytes
SHA-256: fec45630155636527f0fb489e0967415db145d494034a881dd5c70f329062e9a
font_02_sfnt_off0000ad23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD23 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000ba35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA35 19084 bytes
SHA-256: 837a639daa187fc447bd118567dc66774ab6c99c19a83daf34219dbfdd013636

Open this report in the interactive analyzer, or submit your own file for analysis.