Malicious PDF — malware analysis report

Static analysis result for SHA-256 bddea11aa89799fc…

MALICIOUS

PDF

46.6 KB Created: 2021-06-07 09:21:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 68c8ba58a4468b90e86abc068e32d615 SHA-1: 407da74ca1fd509085a25717c19ea7273779641f SHA-256: bddea11aa89799fc98a74ff898fe573b0621271e5bd6a2cb2db26814715fe334
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a 'free generator' for game currency, which is a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/how-to-get-free-robux-by-joining-group-no-buying-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/free-tiktok-followers-without-downloading-apps_GM835599320.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/best-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-group-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/my-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/apps-to-get-minecraft-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_off00005317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5317 26980 bytes
SHA-256: b67d0206ea247e279480ba24a342b2e547e7633d7d4464c89f05545ab91d13ec
font_01_sfnt_off00009109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9109 19212 bytes
SHA-256: 9936bdcd88cd536507efe059ed9c224ec70ba816e249ca1ed320af1f329b786a

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