Malicious PDF — malware analysis report

Static analysis result for SHA-256 e462e2a9d5bc6028…

MALICIOUS

PDF

37.2 KB Created: 2021-05-22 20:16:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3a0c1e29a61c73266857e5ef3a7be273 SHA-1: a322766b89b3e4b9dc7f689159531cb9afd9ba9c SHA-256: e462e2a9d5bc60286187e5962f2a9850b5a897d673ece301fa6f819e86b76290
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/how-to-hack-roblox-for-robux-game-hack PDF link annotation
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-premium-free_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-food_GM406889139.pdfIn PDF document text
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/archery-master-3d-coins-hack_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_off000033a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33A0 25576 bytes
SHA-256: 3921d39c2a00445eaf2f26bd2b1f85178bbdd074a4d563eb7dc41265ea7163de
font_01_sfnt_off00006edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDB 18648 bytes
SHA-256: 7689b6731d47fc176aef925fc5194a10a34d162e90d7014a3ccea13949bcaf7e

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