Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c94e30713b2c13…

MALICIOUS

PDF

36.4 KB Created: 2021-06-25 11:22:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5a5815b873f8d5a93a250ee23303355a SHA-1: 9d486cf44e2fc7d96fc9d403aaa1e81801d00132 SHA-256: 89c94e30713b2c1343a756e8cd53130d33683f5fe8b37d1b4b0af22b67e988d0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack lure, redirecting to malicious infrastructure at http://netcdn.co/app/431946152/access-here-https-roblox-jailbreak-hack-game-hack. The document body also contains this URL and references to 'free robux' and 'game hack', indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a malicious workflow designed to trick users into visiting potentially harmful 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/access-here-https-roblox-jailbreak-hack-game-hack In PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/lazyblox-com-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-robux-online-hack-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-items-that-you-can-get-for-free-right-now_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-any-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-hack-free-download-no-virus_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/counter-blox-esp-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-phantom-forces-free-guns_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-gear-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-fly-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-ad-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-hack-tool-download_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-roblox-catolog_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/is-minecraft-dungeons-free_GM479516143.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_off0000367c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x367C 22536 bytes
SHA-256: 69698e5cf86a5da30a1696989e708a10656e17f0dd69c19c26bb47e9f5224d34
font_01_sfnt_off000068d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D7 19224 bytes
SHA-256: 84097632a71dee3a88a3a233007441ab03c92a5a4607d26daf27df823a7e34b9

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