Malicious PDF — malware analysis report

Static analysis result for SHA-256 72f960e8d6251df8…

MALICIOUS

PDF

55.8 KB Created: 2021-06-03 14:34:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0d1747346d0b4e331995d0dcbfc3c317 SHA-1: 1f277fdacb4dc8e69e02fd19ffd2d854b28758e9 SHA-256: 72f960e8d6251df8093aef6a320ea8211f68be6236d573f7385eaed38c17a71d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9373

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/479516143/minecraft-pe-apk-free-download-game-hack PDF link annotation
    • https://pustaka.widyakartika.ac.id/repository/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-rules_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-redeem-code-free_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/wwwroblox-hacksites_GM431946152.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_004_off000053e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53E5 25688 bytes
SHA-256: 179b4b2fb6d96855d4286f6ce59439f6a8087f5e305b0f8bcc466b0e8a62c37a
font_01_sfnt_off00008ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA6 7936 bytes
SHA-256: 038829bc81e15b6024d2a75b24b2b95e916dd2d8797e4f87b867de59d61698ef
font_02_sfnt_off0000a7d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7D0 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000b65c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB65C 18788 bytes
SHA-256: 56ecf13b7fdae58d5e4afb69efa7bdb7b8d9a7a0932eb3c661bed49813117ab2

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