Malicious PDF — malware analysis report

Static analysis result for SHA-256 28fd31682d75e9a5…

MALICIOUS

PDF

45.7 KB Created: 2021-06-03 07:25:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 584293c251eeb1078e7267c8d52ccee8 SHA-1: da2a96a22b321ffb60f8af6c20cbaa0837e875b7 SHA-256: 28fd31682d75e9a513e1e04113573a324bd042528b242a6a147d83d96a681ad4
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/roblox-studio-free-robux-game-hack PDF link annotation
    • http://library.itekes-bali.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-apk_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-download_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/tiktok-free-online-unblocked_GM835599320.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/pubg-uc-image_GM1330123889.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
stream_004_off00005203.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5203 26320 bytes
SHA-256: 34107f6c8d966cf6b83427380b442e095c989d2d660188a21684a27ac2e73ee3
font_01_sfnt_off00008f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F7E 18484 bytes
SHA-256: 5fdc582f30145a96e28329e80bd45567e2bf6a1df475cf6931e13f95db6331fe

Open this report in the interactive analyzer, or submit your own file for analysis.