Malicious PDF — malware analysis report

Static analysis result for SHA-256 8daa481d35246042…

MALICIOUS

PDF

35.8 KB Created: 2021-05-23 17:15:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fbf850f1bed89bc5046c013448524259 SHA-1: 8604faa2bcb7dec9c215577e2d271ade393c8db6 SHA-256: 8daa481d35246042e8bcfb7c6743c72057e6887bcda31278bbbeba372d32e795
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent call-to-action lure related to 'free promo codes for Robux' and game hacks. The heuristic firings confirm these are malicious redirectors designed to trick users into visiting potentially harmful sites. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs suggest an intent to lead users to phishing or malware distribution pages.

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/431946152/free-promo-codes-for-robux-game-hack PDF link annotation
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/are-pubg-uc-cheap_GM1330123889.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://citramandiribor.com/ckfinder/userfiles/files/free-spins-coin-master-2021-today_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
font_00_sfnt_off0000322b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322B 24272 bytes
SHA-256: daf16c6f0653734fd20500c6ad042dec0de124a1b62608a9196ea675f120d8b4
font_01_sfnt_off000069e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E3 18604 bytes
SHA-256: f71c03fba91376071fb946d88a6d16afcc2c6d61aa4ef632c3571b6200829f5d

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