Malicious PDF — malware analysis report

Static analysis result for SHA-256 a56772f90da1b269…

MALICIOUS

PDF

34.6 KB Created: 2021-06-23 07:57:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d6de6bd384559fd02c80b09fda38acb6 SHA-1: de4e1fd51a4578d1aaa3637c6496efc47aa7cfa0 SHA-256: a56772f90da1b2698c230e5b3f013ccae1b750152b0fa65479d3c67a5b33e389
82 Risk Score

Malware Insights

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

The PDF document contains a lure for 'free Robux' and links to external URLs, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest it may exploit PDF vulnerabilities or lead to a malicious download, aligning with common attack patterns for such lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/get-free-robux-on-roblox-games-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/free-robux-rblx-market_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/claim-your-free-roblox-game_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-o-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/freer-tiktok_GM835599320.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/como-hackear-roblox-y-tener-robux-infinitos_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/snapse-hack-roblox-2021-anti-ban_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-vip-server-roblox-saber-simulator_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-spin-link-for-coin-master_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
font_00_sfnt_off0000307a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307A 22156 bytes
SHA-256: f3c6fdb027a7db874447240e37b39f326e713de6f3764bf80ec42964524b3bb2
font_01_sfnt_off000061d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D8 19152 bytes
SHA-256: cd415b7d202b49144abdfcfcf80ace98ae3a667ee5a2bbeacfa393b6c52dd57e

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