Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1dcfa8308f1e587…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 12:06:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e283a0725357f86402f7a28625b7dec2 SHA-1: d598f59b8f3f87aed6dcb3f4ad61b363c38f0491 SHA-256: d1dcfa8308f1e58718fe202dcd16733662603996760884f7e2bd7f7c7be8effb
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/free-spins-coin-master-apple-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/this-app-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox40com-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-hack-someone-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/cooo-tener-un-pokemon-roblox-free-pokemon-brick-bronze-beta_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/claim-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-hack-roblox-jailbreak-beginner_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/pokemon-go-free-pokecoins-hack_GM1094591345.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/you-promised-my-son-free-robux_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_002_off00003030.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3030 22704 bytes
SHA-256: fc503ad803886b326d4f1e61802df2cb0114d711e48abb57f391d8bd0a26c8e8
font_01_sfnt_off00006322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6322 18248 bytes
SHA-256: 5fc4058085e688ccbd2e279a6fdf32c136df5194189f80f266052c2afd8c01d6

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