Malicious PDF — malware analysis report

Static analysis result for SHA-256 6482a83919c8edf3…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 10:03:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a7155e93f9129dc7affb484b9940a94f SHA-1: 68aa5e19ea67aeec154a97e7e6575023b5065a0c SHA-256: 6482a83919c8edf37bc22c60372ba869563d2f2c9508527be03b16cc1f0de229
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious infrastructure, specifically advertising free game hacks and generators. The ML classifier also flagged this PDF with high confidence. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lure users 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/406889139/freespinandcoin-game-hack In PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/roblox-how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-robux-codes-march-2021_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/a-tab-that-can-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/minecraft-education-free_GM479516143.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/master-hack-coin_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-hack-2021-iphone_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
font_00_sfnt_off0000309e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309E 22776 bytes
SHA-256: 417e1679ffa2b19513670d8b18e85a5db0a77f37fb6d7a4176c31bc06203721f
font_01_sfnt_off0000639d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639D 18244 bytes
SHA-256: 19494bed36003fadbe02431e250c62ef1698fa422030438aed600d934fd3a9e1

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