Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b95923042295624…

MALICIOUS

PDF

43.3 KB Created: 2021-05-13 00:09:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 37ac9549e077f49062431e12c81b282b SHA-1: 226e93ee0ef9a362c09ad96f692724ee85933b8c SHA-256: 8b9592304229562418efae6601cf9f45a3cfe4dca505179bc6253c03418f8297
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9969

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.xyz/app/431946152/roblox-scam-game-hack PDF link annotation
    • http://stitqi.ac.id/website//repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-free-spins-link-today-blogspot_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
stream_003_off000049d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D7 26872 bytes
SHA-256: 3106724b0c6b697a9e849b0bab607d8ad90b6922dca7e6b1159e56335a2c34bd
font_01_sfnt_off000086f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F6 18272 bytes
SHA-256: 7b39c4dacff7c5d1b2022c6d4649f96bab87af58e112e98db5dd443598617208

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