Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b49db74417aea10…

MALICIOUS

PDF

36.4 KB Created: 2021-05-21 12:36:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4eec24a72502b341b9a8e26aa4de07b4 SHA-1: cafa48e848a56543631596591aa6e75d072b24c2 SHA-256: 9b49db74417aea10b6510dbdf947306dfb3445858ad1d48acd34efb1b66b41f4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to 'free Minecraft codes' and 'game hacks' to entice users to click on a malicious URL. The primary malicious URL identified is https://netcdn.xyz/app/479516143/free-minecraft-codes-2021-game-hack, which likely serves as a redirector to a payload. The document's structure and embedded links suggest an attempt to exploit user interest in free in-game items or cheats to initiate a download or further compromise.

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/free-minecraft-codes-2021-game-hack PDF link annotation
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/free-800-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn4jkt.sch.id/__statics/gudangsoal/files/hacks-to-get-free-robux_GM431946152.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_off00003476.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3476 24972 bytes
SHA-256: 60f2bea7b9538c4f72cc51ef2943619f395f4ffe467ab128c2fba9e40f8e45d5
font_01_sfnt_off00006ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEB 18288 bytes
SHA-256: c3cf5bb4a2b6206e2e9676afab3316ea2b1c646b143759ef858dff5c5e762465

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