Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcdaf20dc5629f3d…

MALICIOUS

PDF

45.8 KB Created: 2021-06-03 21:38:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 90806d020b15c55a2ce6fbb81577f3ed SHA-1: 25fd1f7f431e733d10b59ec809bc9f0fe60727f7 SHA-256: bcdaf20dc5629f3d509702c0cb7af02d56ad86d660c9d61bd8455483c57db7b2
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 0.9797

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/406889139/coin-master-free-spin-link-list-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-hack-top-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/i-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-xyz_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004bff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BFF 25632 bytes
SHA-256: 1312b30dc26bf4778eda0a90c69e5ddede994f17963668e62491c256a877c99b
font_01_sfnt_off000086b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B8 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off000090a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A3 18056 bytes
SHA-256: a4f33549350803e8a819cbfad6b4ff3cdc0b302ceab74af9f2f663eab6bd9ec0

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