Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea98f371a5f7e2e8…

MALICIOUS

PDF

45.7 KB Created: 2021-06-09 03:42:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4f07de8e0f4130ec4d14dafb12f3a160 SHA-1: c526fd1aba1eb816305077f94026814ad478a53b SHA-256: ea98f371a5f7e2e867c2f5c55ead72c7f77f69383f2d260bc141b6ddcb0b5ae4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and domains associated with scams, such as 'free generator / game hack' lures. The document body, though partially obfuscated, contains references to 'Hack Roblox Luq' and directs users to URLs like https://netcdn.tw/app/431946152/hack-roblox-luq-game-hack, indicating a social engineering attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a phishing or malware distribution workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/hack-roblox-luq-game-hack In PDF document text
    • https://labdagatismk1pundong.com/repository/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/mcpe-116_GM479516143.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-free-spins-today-daily-links_GM406889139.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
stream_004_off00004f40.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F40 28232 bytes
SHA-256: 23099bd91743517da5171e74a52fd7d7ba8255373b24de05493dea5c816f0210
font_01_sfnt_off00008f87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F87 18492 bytes
SHA-256: bffaf0de771c72ad427787ab97552b7edf59f4e7a383278fe5c0d9aec5c0b5fa

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