Malicious PDF — malware analysis report

Static analysis result for SHA-256 36b05e690e70b671…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 05:25:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b69313c287fe68fd87dc41c7e010d9b7 SHA-1: dfd39bb998ad81e8506a6c5f3e0d793fdf54a703 SHA-256: 36b05e690e70b671d1e9458051700077982eb8d229515c794f1c8ce4dff0e798
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, which is a common lure for malicious content. The embedded URL, https://netcdn.online/app/431946152/https-rbx-place-rewards-game-hack, is directly associated with this lure. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a potentially harmful site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/431946152/https-rbx-place-rewards-game-hack PDF link annotation
    • http://slims.abulyatama.ac.id//repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-redeem-code-free_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/aternos-free-minecraft-server_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
stream_004_off000050ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50FF 25928 bytes
SHA-256: 3c3aa9c09257d39a97f3870f138b6cdd0199364c88ffc0ee4824f7e604cab336
font_01_sfnt_off00008bda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDA 18640 bytes
SHA-256: adbb92b042532d7f987745dbbe30e528a9aa5ccea6c943b93cd0d8aa572e92fd

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