Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e74dcc5ac3dcb1…

MALICIOUS

PDF

34.6 KB Created: 2021-07-02 07:51:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7bf909fa3861d236a081c5373e4b310c SHA-1: 8bc2a029b089b1de400d718a468cfef351488438 SHA-256: 03e74dcc5ac3dcb1a643a587c4887613853d43d567b397f60edc38e2a43a2f0d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating it is a malicious redirector lure, specifically targeting users interested in game hacks and generators. The document body and embedded URLs point to a redirector hosted on 'netcdn.co', which is known for distributing malicious content. The primary lure is related to 'Roblox Tower Defense Simulator Hack', aiming to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-tower-defense-simulator-hack-game-hack In PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/how-to-make-an-audio-on-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/cheater-arsenal-roblox_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/hack-millions-of-robux_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/click-100-times-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/elemental-battlegrounds-roblox-diamond-hack_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/how-to-hack-robux-2021_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
font_00_sfnt_off00003041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3041 22056 bytes
SHA-256: 7599e671ced72a262545417b2a4408fbf4e4e19010e4603efef467a74337b292
font_01_sfnt_off000060a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A2 19612 bytes
SHA-256: 4c576e8413199b4f3e6f397d0d54ff406ea26ef9a195becab8a153b9363d2d2e

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