Malicious PDF — malware analysis report

Static analysis result for SHA-256 258b4c0146713ec8…

MALICIOUS

PDF

37.1 KB Created: 2021-05-21 07:21:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6802ce85fe2347ff26f5374a7da390e8 SHA-1: aef0b94198ce98f6b9eea7b91fd174fe28f5dbed SHA-256: 258b4c0146713ec82be5ab097630776bd7392ba05de39f404012582424e02555
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-get-free-robux-youtube-game-hack PDF link annotation
    • http://caraless.com/images/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://caraless.com/images/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/coin-master-free-spins-link-2021-april_GM406889139.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
stream_002_off000032d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32D3 27232 bytes
SHA-256: 687831bbc2956e659998436dfa074051c4bd14a7549587251c4a1b8e4092f048
font_01_sfnt_off00006f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5D 18444 bytes
SHA-256: c8869677d4d84c4518e8410e1128de6ae04a76f8db213e07b668dd1668cda2fe

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