Malicious PDF — malware analysis report

Static analysis result for SHA-256 23c5ff7af5ecc624…

MALICIOUS

PDF

38.2 KB Created: 2021-05-22 02:46:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b851ed87341986417a89a54aef5b8b10 SHA-1: b940ff2cf38989fddd6f5eebb84dcce9254c335c SHA-256: 23c5ff7af5ecc62468f70024a18ab075ca1c7a266a1d3f4f60c8fcd3bd7b6d48
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a website offering 'free generators' and 'game hacks', a common lure for malicious content. The ML classifier also flagged the PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it is designed to lead the user to a potentially harmful site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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-hacks-wurst-game-hack PDF link annotation
    • http://rose-mari.com.ua/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://rose-mari.com.ua/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://rose-mari.com.ua/images/coin-master-in-app-purchase-hack_GM406889139.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
stream_002_off000030f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30F1 25160 bytes
SHA-256: 583ece6713d8ffe22b931c04c5edf357eef74e162d14acaa6573891792617b1f
font_01_sfnt_off00006a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5C 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off00007446.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7446 18076 bytes
SHA-256: 3e7497e6bc4bf84e5186ee2c608eda5b15e7e8e7c6854cdd6eb66a0ec10d8832

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