Malicious PDF — malware analysis report

Static analysis result for SHA-256 e402bc19630234ec…

MALICIOUS

PDF

32.3 KB Created: 2021-06-18 20:34:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 50467ef0174248578e28acc61c85c004 SHA-1: 6478276364e2800939e4d01f4aab51493e0c5d28 SHA-256: e402bc19630234ec894e71c040ae92ea91061a21a4cb519311d4da32a4e2d16b
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising "free L Robux 2021 Obby" and "game hack" generators. The document body and heuristics confirm the presence of these lures, indicating an attempt to trick users into visiting malicious sites. The primary IOC is the redirector URL, which likely serves as a gateway to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/free-l-robux-2021-obby-game-hack In PDF document text
    • https://ceranique.nl/images/claim-roblox_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/master-game_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://ceranique.nl/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/robuxglobalcom_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/free-robux-today-codes_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/free-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/roblox-survivalist-hack_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/roblox-robux-hack-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/roblox-robux-page_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/roblox-how-to-change-username-for-free_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/free-robux-roblox-hack-proof-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/admin-hack-roblox-download_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/free-google-play-promo-codes-coin-master_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_off000028d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28D1 21772 bytes
SHA-256: aa82b50e05e6f227dfc87f00e6c5f1545a92614490306520725bdc08599c0175
font_01_sfnt_off000058e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E7 19112 bytes
SHA-256: e7e86f65e873b11616a58185721dff9fbd82f4d016b53bdd1b0b5933fe6f445f

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