Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb1061738769a295…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 08:33:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5e55c2d5cb73ebc24caad4291d2d0236 SHA-1: a9adaf27248d868a7d11f80a9aca667f70a3d10c SHA-256: bb1061738769a295ef59ac897c797ebb837a22d5557155638fed4c6a2141a669
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/406889139/how-to-coin-master-spin-hack-game-hack PDF link annotation
    • http://pustaka.fti.unand.ac.id//repository/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-instant-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-roblox-alt-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-free-games-to-play-now_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-cheat-codes-n-text_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/sign-up-for-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/qtx-roblox-exploit-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/rbx-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-have-free-robux-in-a-web_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-rainbow-wings-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/get-free-gear-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/robux-party-com-four-robux-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_002_off00002fde.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FDE 23096 bytes
SHA-256: b22504f9e571d0d35e8e757e6276f87e2df127b6499f166571cbc34938040b41
font_01_sfnt_off000063df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DF 18344 bytes
SHA-256: 1b45721854a26912eac4a4073874816a3bc474c99f5ea999af20f5b07fe9c6b8

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