Malicious PDF — malware analysis report

Static analysis result for SHA-256 b86f9e7c8c16ddb4…

MALICIOUS

PDF

46.6 KB Created: 2021-05-15 08:41:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9ed908ab8e964244cef598fa0537a5ac SHA-1: 24e497b5cd560f3e4a63fb720a455dc63bbaf9dc SHA-256: b86f9e7c8c16ddb4f17616083217cf713db83241b4761d2fb6e3c05aaca5cd47
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a visual download button lure, suggesting it is designed to trick users into downloading a secondary payload. The primary URL, https://netcdn.xyz/app/431946152/roblox-free-clothes-generator-game-hack, is associated with a lure for free in-game items, a common social engineering tactic. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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-free-clothes-generator-game-hack In PDF document text
    • http://killebergsridsport.se/images/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-app_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://killebergsridsport.se/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://killebergsridsport.se/images/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bd3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BD3 27524 bytes
SHA-256: 8510d5b4ba74ba2defc7efec795e638bb0b5cf6c949df07ba0750e6264cd9b38
font_01_sfnt_off000089b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B0 2824 bytes
SHA-256: 45bf821f81e84f4aa8d8374f492b182b36404f38b462c7dc471deaad6ab5c104
font_02_sfnt_off0000935e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x935E 18448 bytes
SHA-256: afe4d80e9b307905d1b46577691458e01dbb921fe666fe9998ea064ff4a1b434

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