Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a7ddb8628ec6028…

MALICIOUS

PDF

34.0 KB Created: 2021-06-19 23:05:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 62f5d359140dd5671226753032ecbc0c SHA-1: 45b1a94fa0a79c612ff11d6296d4fa2beafdaa00 SHA-256: 5a7ddb8628ec602816f0e85d0986402f1c05b3382d435e82442dfe07388e70ad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'Roblox Cheats 2021 Skywars' and other game-related hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates a phishing or scam attempt. No scripts were extracted, but the document's primary function appears to be luring users to potentially harmful websites.

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-cheats-2021-skywars-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/skin-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/fb-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/auto-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-online-roblox-code-generator_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/tiktok-free-jazz_GM835599320.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/hack-dev-api-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-offer-wall_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-alot-roblox-game_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-2all-site-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F66 21208 bytes
SHA-256: b07b4dd7adfbd832f291bb0e3718a879a90d23b288d653f27aaf9b546bc2cc61
font_01_sfnt_off00005dae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAE 19672 bytes
SHA-256: db39d5bd3989103298d861b81ed977f3e9ca345621b56fc6a569aa4951c61506

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