Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccd1d6d23a8e2a58…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 14:43:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7c84fa850c523ad03827afb5d06867d5 SHA-1: 157c615be530c957d5bfaf73682624bf72bce00f SHA-256: ccd1d6d23a8e2a58645c634ff8729b3544a366d33e49979d1521bb41fca8e26c
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free generator / game hack" which redirects to a suspicious URL. The document also mentions password protection, a common tactic to bypass security scanners. While no scripts were directly extracted, the nature of the lure and the embedded URLs suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/how-to-install-minecraft-for-free-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/free-bobux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/pubg-8-uc_GM1330123889.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://playhack.in/minecraftIn 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_off000052d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52D3 25596 bytes
SHA-256: 07929244069289917111d040415469ee64ec77c88ad0a310c7165d1d4dd897f1
font_01_sfnt_off00008e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E15 17948 bytes
SHA-256: 5e3ba7e4cd3ca4e9461728952bafe8ac7745d23e1bc3d1385ef5be4278fd35be

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