Malicious PDF — malware analysis report

Static analysis result for SHA-256 d378fd64af5cfa8a…

MALICIOUS

PDF

45.8 KB Created: 2021-06-03 19:22:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0a4dbc0a14a3952a9d4e0f0a9ffce0d6 SHA-1: f49a53694dc2b3a6da9756275c3ac5dfd82bf0a6 SHA-256: d378fd64af5cfa8a56e20a22b6e5f0ef29204684dc81fa681ae91925ce3b1215
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 0.9864

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.online/app/431946152/how-to-get-free-robux-2021-no-human-verification-game-hack PDF link annotation
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/is-pokemon-go-community-day-free_GM1094591345.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-hacks-pc_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_off0000531a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x531A 24928 bytes
SHA-256: d9c2d44c3640d352437e258f20821a0ac5de948fa1963cad08d7a4c100eb417d
font_01_sfnt_off00008cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF8 19428 bytes
SHA-256: dfc7ca414cfca4f80301273998e01ceb4bfd22e3de883fcbe9d6a0102e8d41a4

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