Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac4e869896dd9536…

MALICIOUS

PDF

40.8 KB Created: 2021-05-20 06:49:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2915ec5f26d795346e14244c16f8b615 SHA-1: 550f0b2e31ee37367651b4b94c488e84d66535e1 SHA-256: ac4e869896dd9536097a518dc4a59614d02266c69ac32f155d493f0138e85ab8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into downloading game-related content, which is a common social engineering tactic. The primary link redirects to a known malicious infrastructure, indicating a phishing or malware distribution attempt. The presence of a visual download button further supports the lure. 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/roblox-rewards-game-hack In PDF document text
    • http://www.tdbaska.hr/files/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/strucid-aimbot_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/play-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_off000045c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45C5 24172 bytes
SHA-256: 29102cd59a6fdcd5d1b5e4eb21d53dd5f5bd449b0e04577103deb34fe6ac28b3
font_01_sfnt_off00007c9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9F 18348 bytes
SHA-256: e746527f818eeec2fed82505c45458a072d0ef9a1f0f70f4e50d0d9e13a60d55

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