Malicious PDF — malware analysis report

Static analysis result for SHA-256 d46a3d2bf21cae8d…

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 15:34:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ac8a0f145dc186ce8f89c2fb8ad918fc SHA-1: e28fdd9be4ae698ff68803e2f2f1db2bf4fffb1e SHA-256: d46a3d2bf21cae8d3050e33a46e4fde267f92d763432988cb113ec19f20ce574
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a call-to-action lure related to game hacks and in-game currency, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being used to deliver a secondary payload or exploit. The presence of multiple related URLs further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/irobux-com-redeem-game-hack In PDF document text
    • http://dermatologos-thessaloniki.gr/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/wurst-112_GM479516143.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/google-moon-active_GM406889139.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://dermatologos-thessaloniki.gr/images/40-free-spins-coin-master_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_003_off00004a25.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A25 25916 bytes
SHA-256: a473afc71a75b6468e384ea7ab32bb21ae620e82b72d40e00c12901d95cf0c38
font_01_sfnt_off000084bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84BB 18284 bytes
SHA-256: 3f6fe0a3188e9c5f6f7d3e66842108fe5859511003589c1e266bd8829902cbf9

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