Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c5b140e95662658…

MALICIOUS

PDF

49.0 KB Created: 2021-05-12 04:00:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6e0484e6fe7f283a1401c19bc22a7822 SHA-1: 538a7da87dc90c0dde6d1f87c2ac380fd10eba42 SHA-256: 8c5b140e956626585a5550357e86c6b3a60f4522fe4052d0d426881346c37d08
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action lure, directing users to websites offering game hacks and free currency. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-free-spin-realme-products-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering attack likely intended to lead to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/coin-master-free-spin-realme-products-game-hack PDF link annotation
    • http://library.darmaagung.ac.id//repository/what-is-robux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/minecraft-pe_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/roblox40com-robux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/minecraft-windows-10-code-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cb3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CB3 26268 bytes
SHA-256: 8240cb9114341395865bdfc823f1be059d53f7e401c39b170ee47b508def296d
font_01_sfnt_off000087c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C3 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off00009c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C4E 18688 bytes
SHA-256: 2b96984a12e9234f7a54c21b84caea4c40bc9a6928fd3166a16ecb8c3482d419

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