Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab5a84546193a39f…

MALICIOUS

PDF

31.5 KB Created: 2021-06-18 20:03:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f0ed419b2c8bcdf798aba1571a1050ba SHA-1: 63652082e800ffe4449823c443077125effcacb5 SHA-256: ab5a84546193a39ff9a43c9178bc469fd22deb792b7d9c7704a8c09f7e973c5d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lure users with promises of free Robux and game hacks. These links redirect to malicious infrastructure, indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • 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.
  • 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/an-easy-way-to-get-free-robux-game-hack In PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-online-robux-hack-no-survey_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/cheat-engine-wallhack-roblox_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-make-a-roblox-shirt-for-free_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/hack-de-roblox-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/ninja-zone-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-redeem-codes-free-2021_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-free-play-guest_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/rpxnow-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-hack-userscripts_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-get-free-robux-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/can-you-hack-on-an-alt-on-roblox_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000309b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309B 22676 bytes
SHA-256: 043cd0efecbadf52e74be2117b03635e5be011bd81924d013b6eb8d309f3d9e0

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