Malicious PDF — malware analysis report

Static analysis result for SHA-256 b93ecb46d4973775…

MALICIOUS

PDF

35.1 KB Created: 2021-07-02 05:44:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 250313c28e39ef28b5fdc1449be4bfba SHA-1: 1ad97272bd320c29b0aaf37dd6b30837cbc34e59 SHA-256: b93ecb46d49737751b03f5ee2824a85011a55e976c7401f4415abff1bc83261d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of free game currency, such as Robux. The heuristic firings indicate that the PDF is designed to redirect users to potentially harmful content, likely for phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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-robux-from-roblox-for-free-game-hack In PDF document text
    • https://amazingnepaljourney.com/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/mcpe-client_GM479516143.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-pants-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/roblox-jailbreak-hack-download-ios_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/comment-hacker-dans-roblox_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-gold-cards-hack-english_GM406889139.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_off000033c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33C2 21676 bytes
SHA-256: 1d0094421352faeda5d365e791751d2f767c07082bf19dff76b84054ef202da4
font_01_sfnt_off00006356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6356 19320 bytes
SHA-256: ec12fa197f2a39bcfef5f0625b91c650bfc22b454e1c911cb5d0a7a551528348

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