Malicious PDF — malware analysis report

Static analysis result for SHA-256 5323b53ad465d0cc…

MALICIOUS

PDF

36.1 KB Created: 2021-05-21 23:13:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3a4ec46f1e8f702896ef0f6f679571a4 SHA-1: 18a81f9cc3eec1fea0f70bf63caf101f5e0d1046 SHA-256: 5323b53ad465d0cc1dec0aa0274f77245afc7b3b5071914034200486d2a60c18
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 0.9492

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-robux-promo-codes-game-hack PDF link annotation
    • https://esl.ipb.ac.id/images/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/how-to-get-free-robux-easy-2021_GM431946152.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_off000031f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31F2 25080 bytes
SHA-256: 0866e953d11fe08189ed2de2f6eedee85d81a70801e51008a9083a20127d6761
font_01_sfnt_off00006b08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B08 18604 bytes
SHA-256: 81df952e11a915931eb8909d89f5eda5fa0aae9cee1bf8eea3735c5794fb3fb4

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