Malicious PDF — malware analysis report

Static analysis result for SHA-256 659ab45dd2d5d9d6…

MALICIOUS

PDF

37.2 KB Created: 2021-05-23 12:11:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 37de93de9b000dadf18491f754ee42f8 SHA-1: 19ca1d763c754544d2f93aa5a84b2c461e808007 SHA-256: 659ab45dd2d5d9d65b39558e758c34dc0da42eaca058d7fc0391d9a24038cf44
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to URLs advertising free game hacks and generators, a common lure for malicious content. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to trick the user into downloading or accessing a malicious payload via these external resources, likely initiated by a spearphishing email.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/479516143/play-minecraft-for-free-game-hack PDF link annotation
    • https://www.smartitbg.com/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://www.smartitbg.com/images/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://www.smartitbg.com/images/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • https://www.smartitbg.com/images/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://www.smartitbg.com/images/minecraft-games-to-play-for-free_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_002_off00003577.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3577 25788 bytes
SHA-256: 44cfec81376385951ddd777360c5ae2d9867c82ab17915471188eaadcbb80f06
font_01_sfnt_off000070a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70A4 18116 bytes
SHA-256: 58506b39f0592aa293a22e76cdd5d8324130a94bf097dc81d26ff216ea8060f4

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