Malicious PDF — malware analysis report

Static analysis result for SHA-256 31e6f1e964dfd250…

MALICIOUS

PDF

48.0 KB Created: 2021-05-13 04:32:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ae2470efa9daf84040188d14f2588a62 SHA-1: 980de652a2b55a4b0017e700ef15e85cdcdf3f09 SHA-256: 31e6f1e964dfd2505c3b8fdfae697bfa4bfd14539491196c3d4279e6601112dd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically disguised as 'free generator' or 'game hack' lures for popular games like Roblox. The primary malicious URL identified is https://netcdn.xyz/app/431946152/roblox-free-play-no-download-game-hack. This suggests the document's purpose is to trick users into visiting these sites, which likely serve as gateways to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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.xyz/app/431946152/roblox-free-play-no-download-game-hack In PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://elearning.manulasem.sch.id/__statics/gudangsoal/files/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c5b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C5B 27248 bytes
SHA-256: d8a4530848168fc71575002103469ef8d810a5b6010caad857068e3ad629cfef
font_01_sfnt_off00008a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A54 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off000096fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96FB 19016 bytes
SHA-256: c08b0bfed4549b0a018fdd65c7ecfbabaaf271df113fe836b296c7344acf0339

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