Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e83e2c2ce46a47f…

MALICIOUS

PDF

42.7 KB Created: 2021-06-03 10:06:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a4cc643b1ebf8fef4698b3821a4f948f SHA-1: 6cfa099ca21d0bd7b17e990eb9230c485576585c SHA-256: 8e83e2c2ce46a47f85bcae48ac24072265cfc1bb287183045ea14c03a37ce891
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including one that explicitly advertises a 'coin master hack'. The presence of a visual download button lure further supports the deceptive nature of the document. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample, but the embedded URLs suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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/coin-master-hack-android-2021-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info//repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-game-free-spin_GM406889139.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-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/earn-points-for-robux_GM431946152.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_004_off00004d7c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D7C 24296 bytes
SHA-256: db9fae6d715ec832fca27fe7f3e81f453c25d33e394e162eff6fb20c1aa91378
font_01_sfnt_off00008409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8409 18292 bytes
SHA-256: 2eef875b4bf5d22316b1cf45c42803dae8a296212e229986f5bc4c17bc069cb6

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