Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ed83149896b79a8…

MALICIOUS

PDF

34.4 KB Created: 2021-07-08 14:45:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 68df44b0676b45692964495de9cba8d9 SHA-1: 72640cae62788d9ba2e327eb5e11db27ed221b34 SHA-256: 1ed83149896b79a8f817b3dd854572d7fa649bf29aa21b3ea12b9258802857d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirector infrastructure, specifically advertising 'game hacks' and 'free generators'. The primary lure URL is http://netcdn.tw/app/406889139/coin-master-card-hack-app-game-hack, which is associated with a high-risk score. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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.tw/app/406889139/coin-master-card-hack-app-game-hack In PDF document text
    • https://duoledesign.com/image/data/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/can-you-hack-roblox-anymore_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/red-boy-hack-roblox-download_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/roblox-black-pants-white-shoes-free_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/roblox-sign-up-free-online_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/wizard-hacks_GM479516143.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/become-vip-roblox-free_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/anyway-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/i-was-hacked-by-liepa20212021910-on-roblox_GM431946152.pdfIn PDF document text
    • https://duoledesign.com/image/data/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3094 22760 bytes
SHA-256: 5068a8bf2985234b3e125f514903758c92740dc62863b4bac8a2df2119e877c5
font_01_sfnt_off00006399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6399 18352 bytes
SHA-256: 7a6741876b8a4f47fa99d807c74985d7cbc04f51e0567589917582e4a0dfbcea

Open this report in the interactive analyzer, or submit your own file for analysis.