Malicious PDF — malware analysis report

Static analysis result for SHA-256 57604a0247089d4b…

MALICIOUS

PDF

42.5 KB Created: 2021-05-12 05:37:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d6b883fe867d1f874a397cdf525ad641 SHA-1: c1283fc7767308c98ff6da09ecc8e641fa24e005 SHA-256: 57604a0247089d4be154b3b8c981f7af50a8d8adfe70dd949d46ce6caad7eec3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure for game hacks and free domains, directing users to a malicious URL. The ML classifier strongly indicates maliciousness, and the presence of multiple embedded URLs further supports a phishing or redirection attack. No scripts were extracted, but the document's structure and embedded links are designed to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-domain-for-minecraft-server-game-hack PDF link annotation
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/freespincoin-masterlinkdownload_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_003_off00004caf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CAF 24868 bytes
SHA-256: 2d80f716425fd38244bfa0eab4f91c056a2aa603faa6f8c8c11a1868edcdec22
font_01_sfnt_off00008417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8417 18252 bytes
SHA-256: 7978d84717849f7fe583135464e7fa2f965b05bc02f62d7a17151b102e6c088e

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