Malicious PDF — malware analysis report

Static analysis result for SHA-256 97a0d507a81d5242…

MALICIOUS

PDF

48.4 KB Created: 2021-06-02 14:35:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ad5e7a093e21f1d7b896ef7b046ea7eb SHA-1: b849d81384ad52e91dcfd0d8591c0c515260ce1b SHA-256: 97a0d507a81d52427fb7909dd597dee094e99705f18c6e3595091d6f07388e85
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on a "game hack" or "free spins" generator. These links redirect to malicious infrastructure, specifically `https://netcdn.xyz/app/431946152/nocliap-hack-for-roblox-game-hack`, which is flagged as a malicious redirector. The document body and heuristics indicate a social engineering tactic to trick users into visiting potentially harmful sites, likely for further malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/nocliap-hack-for-roblox-game-hack In PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/oginject-co_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-spins-coin-master-2021_GM406889139.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_004_off00004f5c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F5C 27976 bytes
SHA-256: db79841def8c188b029c1db803a6b52ec32db33e4b2be1c72ce6db5957a624ed
font_01_sfnt_off00008f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F7E 2892 bytes
SHA-256: 514441e3a61c7cc138b3cbbe184afd2860f6700b5711ffaa39edf87d0986d11e
font_02_sfnt_off00009973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9973 18640 bytes
SHA-256: 838108c4157de7b4753724798d8ad28759e8193a63dccc5d83b627d84476db6e

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