Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d623db6e235eec4…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 20:01:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 634ce40c9630e1b0beebb3572e1f17af SHA-1: 24ad2fae96d0f38a4b5669fc8239dc152aacc41c SHA-256: 7d623db6e235eec4bb56cdd920e2545df99e5b9a5d1e405ded7cd40d44e6620d
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 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spins-and-coins-link-today-game-hack PDF link annotation
    • http://katalog.stikesmukla.ac.id/repository/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/hack-download-mega-innovation-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-robux-hack-extension_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-retrieve-your-hack-roblox-account-without-email_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/robux-gainer_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/tampermonkey-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-lumber-tycoon-2-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-medieval-hood-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-hack-explot_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/robux-free-gift-card_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_off00002f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F09 22944 bytes
SHA-256: 9c5d27bacb20a5b68d7b98f22b273b710536c4efe460e5091fe4d622f25ddf96
font_01_sfnt_off00006285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6285 18696 bytes
SHA-256: a6f9ee4f31e630697269259bd77ba9f20f050f36d84dfdb118abf4b75a264952

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