Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7a4d2072815a453…

MALICIOUS

PDF

50.1 KB Created: 2021-06-01 20:22:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 13d632ee8b25888c8b04d284106dd7bf SHA-1: dd5c5144678a678da7e13e7283fd8955011cb7b2 SHA-256: f7a4d2072815a453a52e0190f2973e92d4e4af13b85ebc3eb4ecd28a40528694
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-get-robux-for-free-without-human-verification-2021-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9789

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-to-get-robux-for-free-without-human-verification-2021-game-hack In PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/using-cheat-engine-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/free-shirt-design-roblox_GM431946152.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/free-l-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/free-robux-generator-for-xbox-one-no-verification_GM431946152.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/is-tiktok-free_GM835599320.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/redem-code-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • https://www.dreamcastajans.com/wp-content/uploads/fsqm-files/roblox-are-they-giving-away-free-robux_GM431946152.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_off0000567b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x567B 27140 bytes
SHA-256: f6d4f5edd45e2ac45423db336ffdced4fb703129f5d55960240debab4f695fc9
font_01_sfnt_off00009329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9329 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00009cd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD8 19792 bytes
SHA-256: 2f030d92f6694d5ac44bb8f1ee5d63692b9049411f3b9a4c0899930f188a726e

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