Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e0c197ffa842d14…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 16:34:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8fde1f93f2200d8a0fa3b561ca21bbd4 SHA-1: 88f72abaa83f5375b71811c730465ae9c543af0c SHA-256: 5e0c197ffa842d14dae92190f1f0eee2d1e14a136b553df28f3124032ccce76f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for free Robux and game hacks, directing users to external URLs. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being a phishing or malware distribution document. The presence of embedded URLs suggests an attempt to download a second-stage payload or redirect the user to a malicious site.

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.tw/app/431946152/free-robux-without-verification-game-hack In PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-download-apk-hack-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/tiktok-download-free-jio_GM835599320.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/spins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-online-demo_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/cheat-paintball-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-free-army-shirt_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/jailbreak-hack-roblox-download_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-sell-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/https-web-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-ghost-hack-download_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-polo-ralph-lauren-free-shirt_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-200-000-robux-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hack-para-assassin-roblox-2021_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_off00002e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E47 21708 bytes
SHA-256: fcca13c817a4b90421b6086f0b18a55c6bfcb32c562fd1b6eafbc0842b6e2f8d
font_01_sfnt_off00005dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC8 19436 bytes
SHA-256: 45b9ce1014872b369476cc75d8a7b63b2e3ed395e28419daf66bd30eabd4401a

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