Malicious PDF — malware analysis report

Static analysis result for SHA-256 c41f89528e27e981…

MALICIOUS

PDF

37.0 KB Created: 2021-05-21 13:38:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0a867ace32b00ca7a73d1d3c9f906bf2 SHA-1: c5cdd8d41312bf28b47aa616b6dcf8f1d76cb5a8 SHA-256: c41f89528e27e981339622f42de6058d4a1a014553a9b6e6988c528515e2aba3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks or generators, such as 'minecraft-skins-download-free-game-hack'. The document body explicitly prompts the user to 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', indicating a social engineering lure. The ML classifier also flagged this PDF as malicious, supporting the assessment that it is designed to trick users into visiting potentially harmful sites.

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/479516143/minecraft-skins-download-free-game-hack PDF link annotation
    • http://mtsn11banyuwangi.com/__statics/gudangsoal/files/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn11banyuwangi.com/__statics/gudangsoal/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn11banyuwangi.com/__statics/gudangsoal/files/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • http://mtsn11banyuwangi.com/__statics/gudangsoal/files/how-to-get-free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • http://mtsn11banyuwangi.com/__statics/gudangsoal/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://playhack.in/minecraftIn 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_off00003452.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3452 25844 bytes
SHA-256: 131cdc4af29428b9afa4818e03f97c638ed61d7264b00d7b84a85c9783e22cfd
font_01_sfnt_off00006edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDF 18460 bytes
SHA-256: 54d3aeb7b3beebea3cfa48561b043312cf5d8c01a954df644a6f0691dd3f9e10

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