Malicious PDF — malware analysis report

Static analysis result for SHA-256 38a0e7a55eaf2c19…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 15:54:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bfecc71c98354e5440b1f0b5a5444b3a SHA-1: dfc393e5ee21e559bb6a94c45f888d334378e7a2 SHA-256: 38a0e7a55eaf2c19eb1de5da9ac31e0b2ca272bafee5eb1ad1ad1d0c55cf86fb
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.co/app/431946152/free-roblox-giver-roblox-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-jailbreak-cheats-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-hack-date-of-acount-created-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-hack-me-com_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-download_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-faces-on-roblox-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-hack-thru-premium-houses-in-roblox-pacifico_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3143 22132 bytes
SHA-256: 08bed7b4caa641404b162cc13addb46f14c3133de2ce0663061bfc7710c7b5a3
font_01_sfnt_off00006267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6267 18884 bytes
SHA-256: 4391573c6e537ec5a1ce70ec9896ef1f3e9ffdc2d7381ab1eb3a85a2257d51c0

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