Malicious PDF — malware analysis report

Static analysis result for SHA-256 08b6dd6ea5edc3a5…

MALICIOUS

PDF

51.7 KB Created: 2021-05-12 03:08:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 88e40a9d35d82e236bc4966b9be2735f SHA-1: f4dada05ddf954d026955df69b5bb05b69256005 SHA-256: 08b6dd6ea5edc3a5cfd051979b35c74a2f922da64c260a350e624518fd5e2b02
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising free game items and hacks. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of these links. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious websites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9348

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/free-robux-gen-game-hack In PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/earn-robux-now_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a93.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A93 29340 bytes
SHA-256: cf5f955cced27d5676345b9be3f6ee158b6f878c4f4c309a0a5043fd5837bd78
font_01_sfnt_off00008c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C8D 8704 bytes
SHA-256: ddfd86c88a6b8304bc31eeb9f28c8110fac325cdacc87503bacf4ac741777490
font_02_sfnt_off0000a8f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8F8 18012 bytes
SHA-256: b822dfaf3b200acc051a64c4c7a9b8bc6e1a7e93aa10f3c17b5d396512734dd6

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