Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e83424e0e867f5d…

MALICIOUS

PDF

36.3 KB Created: 2021-05-22 00:35:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: eb22f9285f1a25dfd99f9568fcf4643e SHA-1: 8581615bec07579274db53b2e88a3ecb40ede0f3 SHA-256: 3e83424e0e867f5d1793ed4796177603ba9f4e9ad259b7688f285ac392e107f7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack redirector, specifically targeting users interested in free game cheats. The embedded link directs to a URL associated with a "free generator / game hack". While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering tactic to drive users to potentially malicious content. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/how-to-play-minecraft-for-free-game-hack PDF link annotation
    • https://kitchenset-jogja.com/ckfinder/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://kitchenset-jogja.com/ckfinder/userfiles/files/tiktok-free-gas_GM835599320.pdfIn PDF document text
    • https://kitchenset-jogja.com/ckfinder/userfiles/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • https://kitchenset-jogja.com/ckfinder/userfiles/files/roblox-but_GM431946152.pdfIn PDF document text
    • https://kitchenset-jogja.com/ckfinder/userfiles/files/coin-master-hack-mobile_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_002_off00003443.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3443 25184 bytes
SHA-256: b94327c0d49ea10006aadf00c8c73325789ee2484cc49c79659b86cd189edb33
font_01_sfnt_off00006ca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA5 18284 bytes
SHA-256: 30e565cae926cf2505d0f64cbbb860d09a66a84df24e80d913481d9233f56de2