Malicious PDF — malware analysis report

Static analysis result for SHA-256 b761f0d1ebdc399a…

MALICIOUS

PDF

45.4 KB Created: 2021-06-03 23:08:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1c5817d2ffa30467904da2b15f2d56d4 SHA-1: 0be78587d820feb4d2c9055818bd61c138647817 SHA-256: b761f0d1ebdc399ae6f41d6c2573a9c7e6c914a5babd7946555461b48d9efce8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic firing for linking to a game hack redirector, specifically mentioning 'Coin Master'. The document body and embedded URLs reinforce this theme, directing users towards potentially malicious sites. While no scripts were extracted, the PDF's structure and embedded links suggest an attempt to lure users to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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-game-free-play-online-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/can-pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-bit-ly_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_004_off00005282.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5282 26548 bytes
SHA-256: a17108b58c1d21cc25ccd97aa12eef1a4f59538df98ffdfe5cd6001552555dc6
font_01_sfnt_off00008ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF8 18380 bytes
SHA-256: b5bbbc623ea736b659451b361c4225dcdb8ece8dfba16a3ff4312aad2e8470ed

Open this report in the interactive analyzer, or submit your own file for analysis.