Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae657c27d8119c20…

MALICIOUS

PDF

32.5 KB Created: 2021-07-03 11:38:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2bd9598b0ec751d285b815a505dc054a SHA-1: 76c8d0e6c3a708d51161f327cee6f389f42d0da8 SHA-256: ae657c27d8119c2049f8ff8f1c24fef853a91cd89993f84dbbfd07e21f7aefdc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for a 'Robux Hack Generator' which redirects to a known malicious URL. The document body and heuristics indicate a social engineering attempt to trick the user into clicking the malicious link, likely to download a second-stage payload. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.tw/app/431946152/robux-hack-me-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/free-shirts-roblox-happydave_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/moon-active-games_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-free-roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hacking-denis-daily-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-without-downloading-anything-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-website_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/rbxraincom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/cheats-roblox-highschool_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/4jcom-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-exploit-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/v3rmillion-hacks-roblox-ro-ghoul_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-today-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/csgo-roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/client-minecraft_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-java-hacks_GM479516143.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_off00002931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2931 22248 bytes
SHA-256: b4d1d4ea0e5f1a5e9ee923bf19f86ca227fd77fa9094b54498b6f270956c42af
font_01_sfnt_off00005ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB7 18916 bytes
SHA-256: d49e1575892b00f4a4e8cdcd45bcc6284cddefc71d3a5758140a1c9b54c8cd26

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