Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ca73fe71d8ecda0…

MALICIOUS

PDF

42.8 KB Created: 2021-05-14 23:31:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1420aba64a7f4522e60715cd1f24459e SHA-1: 0a77d1afbd8e17a5bb770455e70d1c7c1f2efa67 SHA-256: 2ca73fe71d8ecda02a95660f5ec724dbd8677999aa65f1ae6f2bf705c0e38068
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a game hack lure. The document body and embedded links promote 'free spin' and 'game hack' generators, directing users to URLs that are likely malicious. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a social engineering attack.

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/406889139/free-spin-coin-master-2021-link-game-hack PDF link annotation
    • http://tileworld.com.au/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://tileworld.com.au/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-generator_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_003_off00004b5e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B5E 25044 bytes
SHA-256: 4de756a58f1197acf5d0a6252102fae4b0915e828a39d71ae1f5726897b81b88
font_01_sfnt_off0000846a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x846A 18456 bytes
SHA-256: 7500aca679d0fadfbda1e17cf023a195ee80a601fef81e7f7ced8cf50182af56

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