Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4443a96cd31d22d…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 07:18:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3bba2dafe0734adec638ef7d858867c7 SHA-1: be8667c2c2ee6b583e3452f4518c590664a034fa SHA-256: e4443a96cd31d22d86fed604f8cf77f8eb2075c45b986af417decbd8453b7728
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency ('Robux') and game hacks to entice users. It contains embedded links that redirect to malicious infrastructure, specifically identified as a 'game hack' generator. The document body and heuristics confirm the malicious redirector and the lure-based attack pattern. No scripts were extracted, but the primary function appears to be directing users to potentially harmful external sites.

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/how-to-get-490-robux-for-free-game-hack In PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-roblox-password-with-robux_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-free-robux-on-roblox-2021-may_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-images_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/games-for-robux_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-have-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/robux-today_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_off00002f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4A 22188 bytes
SHA-256: bd70ed653196a73fa800213916a5cc7e44bfba63c719e7b1082cc87b0b579f0b
font_01_sfnt_off00006080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6080 19380 bytes
SHA-256: 8dd3a9e13b96ed5c178e4ed67cade9054a0f63c7a8632899275d71cb9be9a2ce

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