Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5086395010e0534…

MALICIOUS

PDF

33.4 KB Created: 2021-07-20 08:42:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d4e5429371a660c694ebec8baa579a8c SHA-1: f5c601bfa88b09b67df45b2f090a5ba5b9605bd2 SHA-256: a5086395010e0534283f78fb908498e97671134348a9364fab1752b4e0802d8c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to 'free Robux' and 'game hacks' to trick users into clicking a malicious link. The embedded URL, http://netcdn.tw/app/431946152/how-you-get-free-robux-game-hack, likely leads to a phishing or malware download site. The document's structure and content suggest it's designed to exploit user interest in free in-game items to facilitate further compromise.

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/431946152/how-you-get-free-robux-game-hack PDF link annotation
    • https://reclaimcottage.co.uk/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://reclaimcottage.co.uk/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://reclaimcottage.co.uk/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://reclaimcottage.co.uk/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://reclaimcottage.co.uk/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://reclaimcottage.co.uk/images/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • https://reclaimcottage.co.uk/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://reclaimcottage.co.uk/images/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://reclaimcottage.co.uk/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://reclaimcottage.co.uk/images/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD6 22660 bytes
SHA-256: 7747be1c3f292e4f24ab2f486289b82218e3a1d83fd4ce97d185fd052d827b13
font_01_sfnt_off00005f9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9B 18628 bytes
SHA-256: 2cef95c660e858a81ae37e04a3622e2f2e00aaafcd74508675f1d6c6ac03f058

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