Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2d8f9b81ed95c82…

MALICIOUS

PDF

35.7 KB Created: 2021-07-07 20:12:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1943e742e834739aa16922d2dc1ca179 SHA-1: 2725c5b04de9e010ca8ec3fd62a400466ebe98c2 SHA-256: a2d8f9b81ed95c82ad284cb9d517c933f21368513ee7cb52eccfa7e095338a07
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on offers for free game currency or items. The primary link, http://netcdn.tw/app/406889139/coin-master-free-spins-today-new-game-hack, is identified as a malicious redirector. The document's content and embedded links strongly suggest a phishing or scam attempt to drive traffic to potentially harmful websites.

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/coin-master-free-spins-today-new-game-hack In PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/funny-hacker-scripts-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/youtube-roblox-lumber-tycoon-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/synlapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/100-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2kulonprogo.sch.id/__statics/gudangsoal/files/hacks-for-de-oride-isle-sanatorium-roblox_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_off000033ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33CE 23088 bytes
SHA-256: 96072208f0566f2e9fb283b17907454669c2a43e9b4672266d26bc839cfa0450
font_01_sfnt_off000067b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B2 18692 bytes
SHA-256: 6184845c7d3ec69556037b28859b943dc1bd314208b3c0172f0542dc7e09aff0

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