Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d3a93e67ab1c60…

MALICIOUS

PDF

47.4 KB Created: 2021-06-11 06:02:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a6e694f187bcfb97ee231205f33329d0 SHA-1: f2cd73d1d869ab0d9bfffc55978bac0947ede664 SHA-256: 33d3a93e67ab1c60a6aba8c71ace09aeef2382d69668c90581f131c378cb4244
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 0.9769

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.tw/app/431946152/airplane-2-hack-roblox-game-hack PDF link annotation
    • http://fkunismuh.org/perpustakaan//repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/aimbot-hacks-for-roblox-code_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/gamekit-robux-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-15-free-spin-link-of-last-5-days_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
font_00_sfnt_off00005046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5046 26536 bytes
SHA-256: d2ef6ab924be4ffed3638a79e4a5e4e5f43b329eceac0d5af6d782e9ec65cd7d
font_01_sfnt_off00008b97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B97 2824 bytes
SHA-256: 45bf821f81e84f4aa8d8374f492b182b36404f38b462c7dc471deaad6ab5c104
font_02_sfnt_off00009545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9545 18600 bytes
SHA-256: 620b267335db2dfc83564217d3ab8f47a5b2d2a209d101d30a6c6af48ad56e88

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