Malicious PDF — malware analysis report

Static analysis result for SHA-256 4520f4209decaa90…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 23:08:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2be70e15b8ecde9ea0dba0a069da017b SHA-1: fc71d29c97a1d2c00e820e481b06f5966a4214ab SHA-256: 4520f4209decaa9062dd707607455dcf1aa936b6da84c857bacaed9ed8c794c6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free accounts, directing users to a malicious URL. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to a potentially malicious site for further exploitation. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/free-minecraft-account-reddit-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/tiktok-free-10-followers_GM835599320.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-coins-coin-master-hack_GM406889139.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_004_off000054ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54FF 24284 bytes
SHA-256: 4a46ec10e6388ecc2d5b65740a8528abe89cba9f3edea1067412643f553adc68
font_01_sfnt_off00008c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C27 18024 bytes
SHA-256: 06706ad336338b7ad3fbc0c92e8d54cad43b148c9035f6d20b1c8b9e0858b525

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