Malicious PDF — malware analysis report

Static analysis result for SHA-256 683057f84b9fbe4a…

MALICIOUS

PDF

42.7 KB Created: 2021-05-14 16:00:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ddcf89abb08374e23f6585f34677a67f SHA-1: 700c3d8992802e2590c0180a3567040a718c11b3 SHA-256: 683057f84b9fbe4a1952a091b7d9743df29998e6d28bc91a559dfb29f95f416a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector pointing to a 'game hack' lure. The primary malicious URL is https://netcdn.xyz/app/431946152/how-do-you-hack-roblox-game-hack, which is likely used to deliver a secondary payload or redirect to a phishing site. The document's structure and embedded links strongly suggest a social engineering tactic to trick users into visiting malicious websites.

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/how-do-you-hack-roblox-game-hack In PDF document text
    • https://www.impactfoods.co.uk/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/hacker-coin-master_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/easy-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-roblox-acc_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/wurst-minecraft_GM479516143.pdfIn PDF document text
    • https://www.impactfoods.co.uk/images/roblox-free-robux-no-human-verification_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_off000045f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45F9 25884 bytes
SHA-256: 0837fa85e56e90206e2a917b8780fe6f948056605ae1db4091570bf8efbf97a4
font_01_sfnt_off000082d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D5 18816 bytes
SHA-256: d27b94fe1a8c05d6feb56d9a091a96145976f0feb7173cb46f16c8470fe3a7d8

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