Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a003344eda5d3ad…

MALICIOUS

PDF

43.0 KB Created: 2021-05-19 23:30:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 44af83d60a744397015e6d839827ac37 SHA-1: 2a973cc5b213a3613c37f9a72efb56e7449babed SHA-256: 4a003344eda5d3ad8af0c95db24b2ca05ed4e946e413612ea3c6248e0f7021bf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links and a prominent call-to-action lure, directing users to a URL associated with game hacks. The ML classifier and specific heuristics strongly indicate malicious intent, likely to redirect users to a site that hosts malware or engages in phishing. No scripts were extracted, but the embedded links are the primary vector for the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/hack-coin-master-download-ios-game-hack PDF link annotation
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/robux-free-co_GM431946152.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/roblox-people-girl_GM431946152.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.maddikanang.sch.id/__statics/gudangsoal/files/coin-master-free-stars_GM406889139.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
stream_003_off00004c41.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C41 25304 bytes
SHA-256: 3f89022d9c6b087bb5f2392ce9e27355a284f3dd42669adee4b285bbecfe2c3a
font_01_sfnt_off0000856d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x856D 18296 bytes
SHA-256: 43890a2d2785c69c6118ff6d435c8783855468c0fa0e501324addce9a65c84f4

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