Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ebe604f8c80a904…

MALICIOUS

PDF

41.3 KB Created: 2021-05-22 08:12:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 63d3e73748adc0b26b6f38cf49bda92a SHA-1: 2b2422c954e9eb86f363184a54e8c75edb15ea74 SHA-256: 2ebe604f8c80a904b6e96d5e6170a272e04a101a80fcc35a42cf5808b40554e6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering 'free generators' or 'hacks' for games like Roblox, which are identified as malicious redirectors. The document body explicitly mentions 'Roblox Hack 2021' and includes a call to action to access a 'ROBLOX GENERATOR'. This indicates a social engineering lure designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7471

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/roblox-hack-2021-game-hack In PDF document text
    • https://www.efeskbb.com/upload/content/files/coin-master-home_GM406889139.pdfIn PDF document text
    • https://www.efeskbb.com/upload/content/files/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • https://www.efeskbb.com/upload/content/files/free-generator_GM431946152.pdfIn PDF document text
    • https://www.efeskbb.com/upload/content/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://www.efeskbb.com/upload/content/files/roblox-ftw_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32BB 27668 bytes
SHA-256: 0ee99fb7dfae3e4eb527711edc12837d50a6ba2bb32fde89cfb392fdde4f889f
font_01_sfnt_off00007194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7194 5756 bytes
SHA-256: 400ee760d8ba2af4a989a89998a708334648619bc88f048e6e7319998473a993
font_02_sfnt_off00007ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE9 18584 bytes
SHA-256: 2941163c9806e22b58ea5552aa71059231a9f2c3bbffbca0ecd460ca17501cff

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