Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7fd7ff2ccde31a4…

MALICIOUS

PDF

41.9 KB Created: 2021-05-13 14:15:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f4bed8b042754fed3f449b0360b38db4 SHA-1: 6b5610aac32a4230020efa8e82b1802f110f357c SHA-256: b7fd7ff2ccde31a487c97ca9117f5f9f2e016906d02f3c504c4669eff284625f
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a malicious redirector link disguised as a download button, which is a common lure for users seeking game hacks or cheats. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple embedded URLs pointing to potentially harmful content reinforces this assessment. The document body, though partially corrupted, contains references to game hacks and a URL that likely serves as the initial stage of a payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 3

  • 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/479516143/1.14-hacks-game-hack In PDF document text
    • https://www.ncscolour.no/images/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • https://www.ncscolour.no/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.ncscolour.no/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.ncscolour.no/images/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://www.ncscolour.no/images/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://www.ncscolour.no/images/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • https://www.ncscolour.no/images/oprewards-robux_GM431946152.pdfIn PDF document text
    • https://www.ncscolour.no/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://www.ncscolour.no/images/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://www.ncscolour.no/images/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • https://www.ncscolour.no/images/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • https://www.ncscolour.no/images/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • https://www.ncscolour.no/images/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • https://www.ncscolour.no/images/free-robux-games_GM431946152.pdfIn PDF document text
    • https://www.ncscolour.no/images/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://www.ncscolour.no/images/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • https://www.ncscolour.no/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ncscolour.no/images/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.ncscolour.no/images/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • https://www.ncscolour.no/images/robux-rewards_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
stream_003_off000049b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49B5 25372 bytes
SHA-256: f28f13a85727240806e3861e56cc4d90d1a4fe0920f98d87dd117d703c8e6a52
font_01_sfnt_off0000832a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x832A 17748 bytes
SHA-256: 5c222ee3790d6988dab7730242936a3e132ec412c073a5d6db7623f4f1192a81