Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3900c2b61bd23a1…

MALICIOUS

PDF

39.9 KB Created: 2021-05-25 08:30:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 150aa5242d7bb9a0cd94bcf222e50d58 SHA-1: fe2c805df9b42f451bcd75fca5f02599a6953a49 SHA-256: a3900c2b61bd23a1382d1279c46bfceac03bd9ecd7c26695b9886a3b4c663548
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to obtaining Minecraft for free, directing users to a URL that appears to be a generator or hack. This is supported by heuristics indicating a 'free generator / game hack' redirector and embedded URLs. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for malicious content delivery, possibly via JavaScript if it were present.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/how-to-get-minecraft-bedrock-edition-for-free-game-hack PDF link annotation
    • http://emilac.com/images/create-app-like-tiktok-free_GM835599320.pdfIn PDF document text
    • http://emilac.com/images/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • http://emilac.com/images/free-tiktok-like_GM835599320.pdfIn PDF document text
    • http://emilac.com/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://emilac.com/images/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33D5 26824 bytes
SHA-256: 8e613da0a4bec36c56b2a374fc6184fcac0427a38629693d390ed59497a15041
font_01_sfnt_off00006f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4B 3132 bytes
SHA-256: 47be8c1e362596fa5bd4ed29acf07edad94632e286ba7a52c809fd696d683e5d
font_02_sfnt_off00007a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1F 18436 bytes
SHA-256: 3a0999d30397def23c47b5d80e97d9b0f28df4cbffb45a09cf4ec0f6b7597619

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