Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf38a6a8228d2439…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 16:00:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 88ea8041c7c13baa1b2d590d485568bd SHA-1: 1c26e1c5ababb5406167f8f3c697248e81f1784e SHA-256: cf38a6a8228d2439d4953d73c624427279696ab338eccb5f50d98444d8ea14cd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, disguised as content about game hacks and free generators. The primary link, http://netcdn.co/app/431946152/how-to-spot-a-hacker-on-roblox-game-hack, is identified as a malicious redirector. The document body and embedded URLs suggest a social engineering lure to entice users to click through to potentially harmful content.

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/how-to-spot-a-hacker-on-roblox-game-hack In PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-roblox-cards-pin-number-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/clothing-groups-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-generator-online-no-survey_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-ios-hack_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
font_00_sfnt_off00002f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F30 22472 bytes
SHA-256: a8958a46402dd7452950958d5e45547b95ede66e1b6e6079a1e0f67eb3d6ab50
font_01_sfnt_off00006159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6159 19100 bytes
SHA-256: dff1108cae9c87b5ab3e28d97cbef6d8d89c0d9dff6fc8069ecb1869661f6d1d

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