Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dbd29c85ed4df00…

MALICIOUS

PDF

44.6 KB Created: 2021-06-04 00:00:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 38eab1128268d38f269e0062abf247a8 SHA-1: f492ca17b17906741e9fa8e6f15ea8a976421ac2 SHA-256: 2dbd29c85ed4df0072b76f6d7c0b03ce2e28327c03aff49f94b45f89298f302d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to the malicious URL https://netcdn.online/app/431946152/free-robux-no-generator-game-hack. This URL is likely used to deliver a second-stage payload or conduct phishing. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/free-robux-no-generator-game-hack PDF link annotation
    • http://library.stieyapan.ac.id//repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/get-robux-today_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-alt-accounts-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
stream_004_off000050ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50CE 27120 bytes
SHA-256: 8f6b42a5dfc6090a24f8b1bfbf7838622fb43f60f0b178f79f064b8796f5c1cf
font_01_sfnt_off00008bac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAC 18344 bytes
SHA-256: d0a2580a9848789708f711aeedd4c44eef26827bf748da476089155bc80243e8

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