Malicious PDF — malware analysis report

Static analysis result for SHA-256 41b3f0274e2eec45…

MALICIOUS

PDF

38.2 KB Created: 2021-05-23 08:23:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f5f5ec6bb849a5fa00cbb3c18753492f SHA-1: 3019d3a95bef073d6964d9b6619a72b7b9fc8a86 SHA-256: 41b3f0274e2eec452012d61b22453e4ef0250d11e28dea63958496cd735df5be
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering "game hacks" or "free generators," such as Minecraft and Roblox. The document also includes a visual "Click here to download" lure, indicating a phishing attempt to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

Heuristics 5

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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-windows-10-edition-unlock-full-game-free-game-hack PDF link annotation
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/blox-fun-info_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-robux-games_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_off000037da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37DA 24932 bytes
SHA-256: 9f110d15bbcfbc1d509a9b1478123d0262bc1f0fbe97ef372dbdc4b26800eb4f
font_01_sfnt_off0000711a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x711A 19356 bytes
SHA-256: 614bd227759a0900337b007d73888638d95591a994554acf55d00d578ccef1d0

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