Malicious PDF — malware analysis report

Static analysis result for SHA-256 45617db3e45e04fe…

MALICIOUS

PDF

40.7 KB Created: 2021-05-11 22:08:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1a0860dad2380b7b02ef6932ec25fdd1 SHA-1: 6b4b4d1bf7670135da50c7ea89d8925bc0ce57ca SHA-256: 45617db3e45e04fedb271c67ef3a47b804bb4e865f8c825a0ee4889276e5ad61
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on a "free generator / game hack" which redirects to malicious infrastructure. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely to deliver further malware or steal credentials. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/give-me-free-robux-game-hack In PDF document text
    • http://cleansui.com.tw/image/data/files/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/client-minecraft_GM479516143.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/how-to-get-free-robux-no-survey_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_off0000478a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x478A 23320 bytes
SHA-256: 9276820f2abfb098f2d061e9006b0acd09f0e1d128bc51ed4d9238394b7922a4
font_01_sfnt_off00007c19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C19 18444 bytes
SHA-256: 68319dbf483afe81c5a4de3b3f5290fc223d358c0f75f000dd988daf46eb7eae

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