Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6d88e34a5f2ae22…

MALICIOUS

PDF

34.6 KB Created: 2021-07-02 03:44:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a07b7476fd548c1d7b910f97631143a4 SHA-1: 16bd71c09a6f5357f56a13aa15e6b61d69ee00e7 SHA-256: d6d88e34a5f2ae2238bead65d025deda76378ba14ceb35ca4308887580d4dbd1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The embedded URLs, such as 'http://netcdn.co/app/431946152/roblox-esp-hack-game-hack', are designed to lead users to potentially harmful websites. The presence of a visual download button further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 http://netcdn.co/app/431946152/roblox-esp-hack-game-hack In PDF document text
    • http://lib.untad.ac.id/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/meep-city-free-plus-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/cool-free-green-shirts-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-change-username-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/doanting-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-villages_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hack-para-borrar-paredes-en-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-free-buying_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/master-hack-coin_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
font_00_sfnt_off0000304b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304B 22552 bytes
SHA-256: a86b843bd16d65f265b9ffa7bb2ed5b73bc4ed44596009321f3bf92335337da7
font_01_sfnt_off000062a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A5 18832 bytes
SHA-256: 3b6a4348a88cf51a0592acb161e79cadc5e273e4a51752d6d244f4aee38fd76d

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