Malicious PDF — malware analysis report

Static analysis result for SHA-256 f15e1269b83e4c22…

MALICIOUS

PDF

38.3 KB Created: 2021-06-27 01:23:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0158e8bfa4370ed624900b8afab67306 SHA-1: a9cf0318b60d24301b5b60884859196b593dd391 SHA-256: f15e1269b83e4c223b30a6bd9d773b3b2f0f033487e1cd4ca128c3f69cc8d4b0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains, specifically advertising 'game hacks' and 'free robux', which is a common lure for phishing or malware distribution. The ML classifier also strongly indicated maliciousness. While no scripts were directly extracted, the embedded links and the nature of the lures suggest a phishing or social engineering attack aimed at tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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.co/app/431946152/how-to-hack-dino-simulator-roblox-game-hack In PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-robux-roblox-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/mcpe-free-download_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-robux-2021-july_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/learn-lua-roblox-free_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C99 22680 bytes
SHA-256: 02c726b62a54447de39635a5129c6c86583ed89635819ff323ae7013ebdf7e1d
font_01_sfnt_off00006f2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2C 19612 bytes
SHA-256: cc7f7ffaf02e415f6d3c845b44589e00a8de88784c8f6096978fc520bcc5e7eb

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