Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aa8fb7e23278e8c…

MALICIOUS

PDF

33.9 KB Created: 2021-07-02 04:16:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2e5c46cf75e07771f693e1393357f4ca SHA-1: 6a282ecaa2da39384a40bc7aba78fb99e6ce99d9 SHA-256: 3aa8fb7e23278e8c772694e94df413aae982878bc6ab645cf803fb085a330131
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to a known malicious domain, masquerading as a generator for free Robux or game hacks. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. No scripts were extracted, but the document's content and embedded URLs strongly indicate a phishing or scam attempt to lure users to malicious infrastructure.

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-code-free-robux-game-hack In PDF document text
    • https://library.uigm.ac.id/repository/hacking-incident-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-free-robux-event_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/star-code-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-how-to-hack-admin-on-any-game_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-into-anyones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/glitch-for-free-robux-2021-november_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hack-vampire-hunters-2-roblox-fly_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/comment-hacker-roblox-jailbreak-youtube_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-stuff-on-roblox-ios_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-hack-program_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/project-alpha-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-cotton-candy-roblox-mm2_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-people-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-make-your-roblox-account-cute-for-free-girl_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/como-hackear-una-cuenta-de-roblox-a-un-amigo_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-my-hero-bizarre-mixture-quirks-free_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_off00002e65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E65 22296 bytes
SHA-256: 93460afc8e1890b88bfefaee8a0508a8fafdeea11d10b9d29f4b51592955e57c
font_01_sfnt_off00005faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAA 18964 bytes
SHA-256: 5095de4801dbec4545195aa305aebaed54def083a90df895cd887f19ca6a2078

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