Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2bd9b1e6c4d70b2…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 21:10:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e5bbcf4779648f42b3235a058a1e0e98 SHA-1: 27b6cc742d0c1529dc826b4dbf1bdf61bdb2e006 SHA-256: f2bd9b1e6c4d70b291251a8ad2d80bb13ae5c25262e6907b0374db592bae1224
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'game hacks' and 'free generators' for popular games like Roblox and Coin Master. The primary malicious URL identified is http://netcdn.co/app/431946152/how-to-get-a-hacked-account-on-roblox-game-hack. The document body and embedded URLs suggest a social engineering lure to drive traffic to potentially malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/how-to-get-a-hacked-account-on-roblox-game-hack In PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/free-roblox-accounts-with-builders-club-2021_GM431946152.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/roblox-account-taker_GM431946152.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/flamethrower-hack-roblox_GM431946152.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/how-to-get-free-robux-2021-site-youtubecom_GM431946152.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/roblox-hack-game-guardian_GM431946152.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/robux-cheat_GM431946152.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/pokemon-go-free-7k-eggs_GM1094591345.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/roblox-hack-robux-download-android_GM431946152.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/roblox-esp-hack-script_GM431946152.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/roblox-teethyz-dentist-how-to-hack-through-the-hr-door_GM431946152.pdfIn PDF document text
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/how-do-you-get-unlimited-robux-for-free_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_off0000312d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312D 21872 bytes
SHA-256: 0c94e9b24a2ebc0deb9f553bec3f4553a47ea10886535028b09a444e9752bdc3
font_01_sfnt_off00006124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6124 19240 bytes
SHA-256: a466db85b1cba5dc5df1598d74f1beb93a3fb4f3fea01c6b91c295a3095634ad

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