Malicious PDF — malware analysis report

Static analysis result for SHA-256 672dd3f46c4024fc…

MALICIOUS

PDF

35.4 KB Created: 2021-05-22 01:32:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fce9f4e8b5be156ebd5ffe480e79b7dc SHA-1: 0b4c9584e0eafa2aaca104929fa97d42c6f73496 SHA-256: 672dd3f46c4024fc86089736ba021c09ef85125372809c42e6ba2414a48e62d2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, directing users to websites that promise game hacks or free coins. One of the primary links, 'https://netcdn.xyz/app/406889139/coin-master-free-coins-game-hack', is flagged as a lure for game hacks. The document's structure and content suggest it is designed to trick users into downloading potentially malicious files or visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/406889139/coin-master-free-coins-game-hack PDF link annotation
    • https://www.taline.hr/files/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • https://www.taline.hr/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.taline.hr/files/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.taline.hr/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/play-full-version-of-minecraft-for-free-no-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_off00003389.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3389 25796 bytes
SHA-256: 99143d696088dbb648fcdd1be3deac59b3d33ec973f11082c92ce799f2778294
font_01_sfnt_off00006ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD8 17712 bytes
SHA-256: 0afd6f2792edb83b7f2a0201a1e0a5eb12ca81ad868fb3e42742340ee6e5fb0e