Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a378f607d502921…

MALICIOUS

PDF

33.5 KB Created: 2021-06-30 10:23:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e7f14c70580d7dc6724c485f106faba5 SHA-1: 30eacf0ebab7020364d83a94beff85e0a5c7f1b3 SHA-256: 8a378f607d5029215c5df59f4d73e62bb0c0a201d2be4b37a0e50facc376666c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising free game hacks and currency for games like Roblox and Coin Master. The primary lure URL is http://netcdn.co/app/431946152/free-robux-imzf-game-hack, which is flagged as malicious. The document's structure and embedded links suggest it is designed to trick users into visiting potentially harmful websites, likely for financial gain or further malware delivery.

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/free-robux-imzf-game-hack In PDF document text
    • http://balitgetas.co.id/pustaka/repository/those-of-us-who-remain-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-roblox-shirt-assets_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/cheat-code-sonic-new-map-roblox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/new-dtfb-test-server-roblox-hack_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-use-hack-scripts-in-roblox_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-you-get-free-robux_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
font_00_sfnt_off00002dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC4 21772 bytes
SHA-256: 208b85b11bf2396fbd0dda5ffcc2b3ec77d176507474178792d2d65c8b107cbf
font_01_sfnt_off00005db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB1 19060 bytes
SHA-256: 166e7016708f58a693130599fa1c622c30e90a29a9151fb59d641677675c47c9

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