Malicious PDF — malware analysis report

Static analysis result for SHA-256 943a9fe3ef3436dd…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 02:07:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: cb51576efd8869282df8d8cb4ffb6c81 SHA-1: e4be3a1b082ea1e879a1378ab9bf17d10980a88d SHA-256: 943a9fe3ef3436dd137e0f078607652246667c93f7c9fa12489f3fed57aab1cd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a specific URL. The document body also contains this URL, reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-game-download-ios-game-hack PDF link annotation
    • http://library.stieyapan.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/pokemon-go-free-zangoose_GM1094591345.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-2021-robux-on-roblox-free-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/xray-hack_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-kill-aura_GM479516143.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_off000031e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E8 22660 bytes
SHA-256: b1ad0e23c00017b32d6599adab2a4aac6cb730dc02e00d0af65e138bef82ec5d
font_01_sfnt_off0000646d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646D 18844 bytes
SHA-256: 254b7873c13b961a5fd1abbb446fed851df24c98054d70f9b66963e1d3da8109

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