Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1556a4a83ea260a…

MALICIOUS

PDF

47.0 KB Created: 2021-06-03 14:58:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b09598e33738ba798741c13a7a6aaae4 SHA-1: 4a72aaf2948f78cfe4623056121c6b46aa7aab9c SHA-256: d1556a4a83ea260ac6444de0115c9ad15ff0b0f7d0ba00542f8059b98b220d7c
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 0.9769

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/pig-master-coin-master-free-spin-game-hack PDF link annotation
    • https://opac.heritagejkt.org//repository/roblox-free-followers_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/robux-win_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/cm-spins_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/tiktok-free-view-followers-app_GM835599320.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/tiktok-comments-free_GM835599320.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/how-to-get-free-robux-no-scam_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000526b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x526B 24824 bytes
SHA-256: b119f69c005d5132416744d7c3a3583b8c9d133f76fb14a544da6b65cc00ab8e
font_01_sfnt_off00008a8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8F 2920 bytes
SHA-256: 64c53edae7920bc04119553d13e7f88c7ab8c9d6abd0f5e62be35afdb33f76ff
font_02_sfnt_off000094ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94AB 18328 bytes
SHA-256: c0a64c35313388beafce2145b76a0bf40d6659a82da461cbcb21248082e95923

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