Malicious PDF — malware analysis report

Static analysis result for SHA-256 a302de2165606905…

MALICIOUS

PDF

43.2 KB Created: 2021-05-13 09:00:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dee162cc443ed3f5028d8d5e96afcf69 SHA-1: 9d9f46b1d3fe63e17b19088f05e1cda59e7960dd SHA-256: a302de2165606905917fbb2f7e09d5aeb4ebc9852e4cd2fc06185a8c3d48da1d
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 0.9969

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.xyz/app/406889139/master-coin-free-spin-daily-game-hack PDF link annotation
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-no-verification-2021-ios_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
stream_003_off00004c14.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C14 25340 bytes
SHA-256: 830b609c29a1ce4f94662e17918757c1b2ea74c8deb29cca03d6426bf49943e5
font_01_sfnt_off000086b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B7 18308 bytes
SHA-256: 29cb14730145ee7b34c09c890f7b8837377acbe26d0b8b5df788708214c202fb

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