Malicious PDF — malware analysis report

Static analysis result for SHA-256 5380d7b25e218373…

MALICIOUS

PDF

35.7 KB Created: 2021-06-18 03:47:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0a856a1c39c8d14edc93681254774c9f SHA-1: 6becbfb03c88d9529f9e14ea0431b7c8e4df51b9 SHA-256: 5380d7b25e218373f722469670babe3a543979e3a276d8c2a1d47dccdae97118
160 Risk Score

Malware Insights

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

The PDF contains multiple links to redirectors and external sites, disguised as generators for in-game currency like 'Roblox Free Robux'. The heuristic firings indicate these links lead to malicious infrastructure and are part of a lure to trick users into downloading potentially harmful content. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious redirector chain designed for initial access.

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/roblox-free-robux-no-survey-no-save-no-subscription-game-hack In PDF document text
    • https://scraperite.com/images/roblox-hack-cleant-jailbraik_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/como-hackear-cuentas-de-roblox-2021_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/roblox-mining-roblox-hack-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/roblox-hack-2021-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://scraperite.com/images/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-robux-generator-with-roblox-quiz_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/free-roblox-toys-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/comment-hacker-roblox-avec-cheat-engine_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_off00003192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3192 23156 bytes
SHA-256: 456e5947f93d9a9b945402d82a1b1a70731ed7162c489a6277dde10eac5b941d
font_01_sfnt_off000065fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65FD 19296 bytes
SHA-256: f3c12b09b557e13d9687dce3d576ac4072cc6e2179b772c00274f1c263229367

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