Malicious PDF — malware analysis report

Static analysis result for SHA-256 4748a8f949d4384d…

MALICIOUS

PDF

46.5 KB Created: 2021-05-17 02:08:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a0fbd07cff01368de5315595560c9d78 SHA-1: 600ea03159ba70d9480f6e65646fa94ba0dfce40 SHA-256: 4748a8f949d4384d0d044b2cbf55a43a196c29f1ef759b269b2531c9707b5b1c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' or game hacks. The primary redirector URL identified is https://netcdn.xyz/app/431946152/hey-google-how-do-you-get-free-robux-game-hack. This lure is a common tactic to trick users into visiting potentially harmful sites. No scripts were extracted, but the embedded links and the ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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 https://netcdn.xyz/app/431946152/hey-google-how-do-you-get-free-robux-game-hack In PDF document text
    • https://www.gejovenlo.nl/images/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/robux-gratis_GM431946152.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.gejovenlo.nl/images/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b0e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B0E 26312 bytes
SHA-256: 38a1519cdb8b5572192c85cbf7e8ab0e25ea0cb91c5475d007f14f35626aa88c
font_01_sfnt_off000086b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B9 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00009068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9068 19156 bytes
SHA-256: 2eaf05fb5b81c851c34d40d7c07e26ddd9b324a9c4f95fd917841cb6815dc612

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