Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaad1c8041751702…

MALICIOUS

PDF

48.9 KB Created: 2021-06-11 11:41:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 039d05c6cad951c408b354c9b7e9a6aa SHA-1: aa5883560a263d2bc478e026384b127c8757111e SHA-256: eaad1c804175170283083e3bc9a79a3f224d61e63ca0c96eeb8c9c244092bf9f
160 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector infrastructure, specifically advertising 'free generator / game hack' lures. The document body, though partially garbled, contains text related to 'free Robux' and a URL that aligns with the heuristic findings. The presence of embedded URLs and the nature of the lure suggest an attempt to trick users into visiting malicious sites, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/how-to-get-free-robux-with-nopde-game-hack In PDF document text
    • https://lib.unitri.ac.id//repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hacked-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/cool-roblox-guy-hacker_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-no-need-to-download-apps_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-get-com_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-hack-admin-on-roblox-with-cheat-engine-63_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-do-you-earn-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000542f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x542F 25644 bytes
SHA-256: 5357db6bb71086736951fa0570f9be12e9ead0bf6051f6637634bf819e422e4f
font_01_sfnt_off00009013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9013 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off000099c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99C2 19116 bytes
SHA-256: 1ffd6d509377b0e68c77e58c1945e6b62eed0faf1f1896ec352fa7d5ea873233

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