Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cdfb8c0a52dafb2…

MALICIOUS

PDF

44.0 KB Created: 2021-05-14 10:32:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ec48cad5fe359be53683160e4c92e027 SHA-1: e1aec71848622eb22c54406e28faeb0611ba5538 SHA-256: 6cdfb8c0a52dafb26db42788ce02bf3f494b1f225ae5b3aadd997093a48c3d56
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically advertising 'free Robux' or 'game hacks' to lure users. The primary redirector URL is https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-human-verification-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristics indicate malicious redirection, likely leading to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/how-to-get-free-robux-without-human-verification-game-hack In PDF document text
    • https://agriturismolagodoro.com/images/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/roblox-generator-com_GM431946152.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/roblox-but_GM431946152.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/coin-master-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/hack-master-coin_GM406889139.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • https://agriturismolagodoro.com/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a92.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A92 25860 bytes
SHA-256: 6ed8bcc17999b9487eb8423ce91f6321f7de34d4edc0b4b085b69fb40bad5e9b
font_01_sfnt_off00008668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8668 19388 bytes
SHA-256: c7994a70f951e7a274445218605a0e5dad46067da7d3a89c75279f94e76bcfde

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