Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b12fbe71007c92…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 11:48:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7532e8369bd019202b41e1cf99abfece SHA-1: 76f4d63017ba28321dfa8996120592a43c04cf9c SHA-256: 88b12fbe71007c92e71864d5615ed1afbaa9f20526bc457a11ea8c47b8930e23
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 0.9865

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.online/app/406889139/como-hackear-coin-master-gratis-game-hack PDF link annotation
    • http://library.ulb.ac.id//repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-generator_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-codes-2021_GM431946152.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_004_off00005151.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5151 24036 bytes
SHA-256: 64acef37b5ab529790f4c69b5b8b008e0eb3119e821af5523de38d1b9cae4e0b
font_01_sfnt_off0000880d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x880D 17976 bytes
SHA-256: a3e9012f8e1f9d61ddd4f1d4d38951fb16594134e53f2a4a4cbd6e03026951a8

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