Malicious PDF — malware analysis report

Static analysis result for SHA-256 b27e24a29409c461…

MALICIOUS

PDF

35.8 KB Created: 2021-06-27 05:07:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b42738ebc7b530110eaf0c668e958b19 SHA-1: 6d74b8b4acb9a57654919897bef86c10c11c6ed4 SHA-256: b27e24a29409c461c204d5210284114cc0f8d4aae55ddb4fc90944c8bc2dedbf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The primary malicious URL identified is http://netcdn.co/app/431946152/free-roblox-rap-songs-game-hack, which is likely used to deliver a second-stage payload or redirect to a phishing site. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a malicious intent to trick users into visiting harmful sites.

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/free-roblox-rap-songs-game-hack In PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-robux-no-hack-may-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-pacifico-how-get-free-premium-car_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-bc-tbc-obc-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-ez-points-gg_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-cheat-code-generator_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-arcane-adventures-cheats_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-no-human-verification-or-survey-or-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
font_00_sfnt_off0000334b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x334B 23236 bytes
SHA-256: 943edbebf362c287962100885388eaff5489f56c8e4e13bcc34e1f5ccef975b4
font_01_sfnt_off000067a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A4 18824 bytes
SHA-256: d6fae2c71606b49d9c98fba2bb74de77a0d02a582277281ae6f38c5c152cf119

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