Malicious PDF — malware analysis report

Static analysis result for SHA-256 953b7bd0a63fac06…

MALICIOUS

PDF

32.4 KB Created: 2021-06-29 11:04:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 639e11328a28dd1e311063837de02f60 SHA-1: d8ae3b0dbb151213da04dae10274f62e4f834be4 SHA-256: 953b7bd0a63fac06cca54cbb74294324eeea3f93b3b5edd1da393048d88d3bd9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, disguised as offers for free game items and downloads. The primary redirector URL is http://netcdn.co/app/431946152/creat-things-free-on-roblox-game-hack, which is designed to lure users into clicking further links. The document body and embedded URLs strongly suggest a phishing or scam campaign aimed at tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/creat-things-free-on-roblox-game-hack In PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/free-non-model-roblox_GM431946152.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/mega-marble-run-pit-roblox-hack_GM431946152.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-instantly_GM431946152.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/is-roblox-free-modelling-bad_GM431946152.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/all-gamepasses-free-on-roblox-gitch_GM431946152.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/roblox-robux-generator-hack-download_GM431946152.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://berkahjayamulia.com/ckfinder/userfiles/files/robux-hack-generator_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_off00002ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD8 21456 bytes
SHA-256: bbda571b72c4aad0b666da3c92bf2440fcb47b588bf3474e2895be067778c633
font_01_sfnt_off000059ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59CE 19040 bytes
SHA-256: a81288cb6ab7f65ba823c41db9f8dd90c1dbfd16002454fab825d3bfb11cde12

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