Malicious PDF — malware analysis report

Static analysis result for SHA-256 c66d42b51992ce11…

MALICIOUS

PDF

45.8 KB Created: 2021-06-03 22:41:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 092dac790ad1b976964d1e35becda3f6 SHA-1: e4256379608c6b741b53c3661d4323986ff3f0f6 SHA-256: c66d42b51992ce1107f59c27b988a51a3905ef7aab1346a8286a3b1b94bf18e4
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/479516143/noob-vs-pro-vs-hacker-vs-god-minecraft-game-hack PDF link annotation
    • http://elibrary.fl.unud.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/coin-game_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/pubg-uc-rate-in-india_GM1330123889.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-5-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54D9 26028 bytes
SHA-256: 70b6ada78e0b62653f0954e697b68a2092bda860a22f7db686741a998cd8c6a3
font_01_sfnt_off00008fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD9 18500 bytes
SHA-256: b5eb0aae73330acae6586af23efb0811f8df12c769def1792db1ea9c848aef1b

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