Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1c1ccd5b5766ed5…

MALICIOUS

PDF

35.6 KB Created: 2021-06-27 15:01:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 71eabe0fb80cf5a407a5b2590047436f SHA-1: 51f6839d52ceb5a59c1722f3e4dc94b5db07b7e6 SHA-256: e1c1ccd5b5766ed5b2ac4829adebd65752848464d3d138105e01d39239b41fb3
160 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware downloads or phishing attempts. The ML classifier strongly supports the malicious nature of this PDF.

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/is-it-possible-to-hack-roblox-in-2021-game-hack In PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/get-free-spins-link-in-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/how-to-get-free-robux-apk_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/como-ser-un-hacker-en-house-of-keys-roblox_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/get-unlimted-robux-for-free_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/how-to-hack-into-any-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/robloxgroup-cf-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/cheat-phantom-forces-roblox-2021_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/how-to-get-robux-the-easy-way-by-hacking-2021_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/how-to-get-free-robux-from-games_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/how-do-you-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-robux-no-spam_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-robux-pc-generator_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_off00003333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3333 22388 bytes
SHA-256: 32adda3cf7322c0e57b859769108628108c18838dd328e96b0fd4bec75df5dc8
font_01_sfnt_off000064f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F6 19436 bytes
SHA-256: 582266817216cdfae0bdf7be12a31c93b489ba2757396ab49218b9307a000d64

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