Malicious PDF — malware analysis report

Static analysis result for SHA-256 a509336f57903ae4…

MALICIOUS

PDF

33.4 KB Created: 2021-07-06 05:01:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8a9282ada6654fe6bab5967484dd5b78 SHA-1: 952277b9ae3c97ac1870961677f991384926b0a9 SHA-256: a509336f57903ae49a14625ef734c20429cd9777991e4aa145ce60e5730d35a0
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and generators, such as 'minecraft-for-free-on-phone-game-hack'. The presence of a 'Password-protected archive handoff' heuristic suggests the document may be intended to trick users into downloading an encrypted payload. The ML classifier strongly indicates maliciousness, and the overall pattern points to a social engineering lure to download potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/479516143/minecraft-for-free-on-phone-game-hack PDF link annotation
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-without-survey-or-verification-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/robux-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-explorer-hack-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/pubg-uc-through-easypaisa_GM1330123889.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-free-robux-hack-penguinson_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-hack-into-anyones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-free-download-apk-softonic_GM479516143.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
font_00_sfnt_off00002f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9E 22112 bytes
SHA-256: 0ef2505d80b6e219142d777c88422b5f5e61d5ae127c888df99b77f1e93e9cc1
font_01_sfnt_off00006017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6017 18316 bytes
SHA-256: 98b982fa9bba8938ef3d8154301223d263821ddf45527be8764ebf15d682b3f6

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