Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e6eda16d81db69…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 22:15:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: ebbc9f996d45de03cfbdce51d2d9ab96 SHA-1: 54038badcf0b515499d693c59197ad57e5f6a5ec SHA-256: d3e6eda16d81db693652500d6c88171e64ae1713eaeae1535b32fda5d2554a26
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one that redirects to known malicious infrastructure. The document body and extracted URLs suggest a lure related to 'free Robux' or game hacks, aiming to trick users into visiting malicious sites. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/robloxmatchcom-free-robux-game-hack In PDF document text
    • http://library.yamasi.ac.id//repository/master-coin-free_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-net-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-tiktok-followers-500_GM835599320.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/earn-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/www-rbx-com_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-a-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-minecraft-pe-for-free_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_off00004d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D9C 26172 bytes
SHA-256: ede33e550f2cadb2eff98d0962f939ab2966901f92d9c4f332a4dd0a1ddcf4bd
font_01_sfnt_off000088e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E0 18848 bytes
SHA-256: ab697af47372efef3bc892e863fb86233d1822f3405b26a2011cbdc17c8d7041

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