Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc43680cd1177a60…

MALICIOUS

PDF

43.4 KB Created: 2021-05-11 00:04:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 28270a79d9d7cd9176c6fd753e35c60e SHA-1: 49a842625ac4ea048b7e7dcc9bf72882f9f25cc1 SHA-256: bc43680cd1177a60d9a46c76a99450925e054865793e784b696916992098dbd6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites promising game hacks and free currency, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were directly extracted, the presence of numerous external links suggests the document's primary purpose is to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-spins-coin-master-links-no-human-verification-game-hack PDF link annotation
    • http://dcmetroapp.com/images/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://dcmetroapp.com/images/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/real-roblox_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a0e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A0E 27108 bytes
SHA-256: d61621a2a1df1e4f317a7b1f04a6cefbd47571a16d05010933226e69f2087416
font_01_sfnt_off000086a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A0 18588 bytes
SHA-256: 5a08ca623146824177ccf371c197f16efef4c40a95708a9224bf5d86e8191d65

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