Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe20463e646c1e74…

MALICIOUS

PDF

48.2 KB Created: 2021-05-16 00:40:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1e5aef0598a9b76d7cf6eca9cc507151 SHA-1: 40ca98dd02c7f25798ac887f30f1a17dbe32c07d SHA-256: fe20463e646c1e74dfc2b160b2fd0582ba83e2e4c521e4b404fd3f0c8c5ae188
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "Coin Master Hack" which links to a malicious domain. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick users into downloading or visiting a compromised resource, likely leading to further malware or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

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/coin-master-hack-ios-10-game-hack PDF link annotation
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mithkromasantulungagung.com/__statics/gudangsoal/files/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b7d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B7D 24316 bytes
SHA-256: ab22a919090abfb6edbdd12fa81194133fab509f689dd60ada65ce30eec2b6da
font_01_sfnt_off000082ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82ED 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off0000908e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x908E 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009a7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A7E 17996 bytes
SHA-256: 58ade539adf3b952ce76e8d334eb1b4796e6809d7279a56372c35fb3cdc2955e

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