Malicious PDF — malware analysis report

Static analysis result for SHA-256 07fe4d45b87531c2…

MALICIOUS

PDF

33.4 KB Created: 2021-07-19 13:30:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: aa8c2fa1f6f4747be3f049b6de7f162e SHA-1: abf3782fdf1aa55b297c72f59fe13e1c435d8919 SHA-256: 07fe4d45b87531c2390dda319e46fb0605a9aa5deca234001d3861dbe629a7ac
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of "game hacks" and "free generators" to entice users to click on embedded links. The primary link redirects to http://netcdn.tw/app/406889139/coin-master-free-stuff-game-hack, which likely serves as a gateway to further malicious content or downloads. The document's structure and embedded links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://netcdn.tw/app/406889139/coin-master-free-stuff-game-hack PDF link annotation
    • https://key8013805.com.tw/upload/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://key8013805.com.tw/upload/files/minecraft-apk-free-download_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_off00002d04.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D04 23340 bytes
SHA-256: 7123e297b9f54dfe38a21e88d864459df4ba225d0f1f50909bd9be4e12a087f0
font_01_sfnt_off000061d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D3 17848 bytes
SHA-256: 49970788d519349fbd5ba6badf06c324563f4794a9a5c1e41d0627a31815ac32