Malicious PDF — malware analysis report

Static analysis result for SHA-256 38b460f7e897b225…

MALICIOUS

PDF

43.1 KB Created: 2021-05-13 16:02:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c263ddc35d32f1c3f142910fe0fd5ae1 SHA-1: 5c3f56632baffd62277ae2507c833faf1cf008f4 SHA-256: 38b460f7e897b225b26ffa75207706c27a45798d9ac109a0b9e6cbb30470d813
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a primary redirector identified as malicious. The document body explicitly mentions 'Free Robux No Verification At All' and 'game hack', indicating a lure for users seeking cheats or in-game currency. The presence of embedded URLs and the nature of the lures strongly suggest this PDF is designed to redirect users to potentially harmful sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-robux-no-verification-at-all-game-hack In PDF document text
    • https://www.arquetopia.org/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/login-robux_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/mcpe-com_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-claim-spins_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_off00004995.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4995 25784 bytes
SHA-256: 4b95e77178f0f6aa578c489f8a79b3fa3bb00454f278b52d11e02e83f41909e6
font_01_sfnt_off000084ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84EA 18676 bytes
SHA-256: a2274236a7a2e18adabb7b86c58cf77696514c901240e043c32ff4f0260e6091

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