Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e480f74f5925c2…

MALICIOUS

PDF

45.1 KB Created: 2021-05-12 12:04:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f4b973fea7196cb398a21640595953b4 SHA-1: 3f9302ac1616a769f94c3c1736394fb5028e41cc SHA-256: 03e480f74f5925c277a48abb4da03f5b861ae99a1a590063066f9f7321874447
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/how-to-get-infinite-robux-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/open-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-code-hack_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/blox-best-robux_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_off00004742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4742 25108 bytes
SHA-256: 3777c5dcc59069c77c433c8dc70b15f5201c8eaf1477cb9646b147786928f55a
font_01_sfnt_off00008133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8133 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00008ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDB 18236 bytes
SHA-256: 8217e2720e15cc92b3bb050ea8e30655d207dd8077634fd20a14500b8eab7772