Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a95e264915384bb…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 06:01:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b95859f794485e4bf39292db424e08c2 SHA-1: 948f63cd47b18cee2ed06a56ae2286cfe1fea7df SHA-256: 9a95e264915384bb5f8542ad6d6785ae9f2d52d8c03a03666a8426f0d98971cb
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 0.9980

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/431946152/free-robux-no-verification-no-download-game-hack PDF link annotation
    • https://yeushuen.com.tw/image/data/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/star-wars-lightsaber-roblox-free-level_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/baldisbasicsbetafreeitemsonmap-roblox_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/how-to-hack-money-on-tycoons-on-roblox_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-roblox-arsenal-hack-executor_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/how-to-get-free-stuff-on-roblox-xbox-one_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/avatar-in-roblox-free_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-roblox-exploit-injector_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-hack-with-lucky-patcher_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DCC 21884 bytes
SHA-256: 99eba167c9a9b1f79324545730cd8a6e251da80a8f8a9c70884c78fcb7761802
font_01_sfnt_off00005dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFF 19652 bytes
SHA-256: 8dba42de70404ddf4ce7a70a40047468e67895e17bebeb66015d1708da090460

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