Malicious PDF — malware analysis report

Static analysis result for SHA-256 eed87e5dfcf88a7e…

MALICIOUS

PDF

50.7 KB Created: 2021-06-09 07:46:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4efb88a49aacbee4cbcb259682517c49 SHA-1: 0b8821dc5cc9ace38b378afd9b899d0963db4757 SHA-256: eed87e5dfcf88a7e3f94f9add7a57dea0be5249338e6050d39b6ee3c8a869532
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to redirector infrastructure, masquerading as "free generator / game hack" content. The primary lure URL is https://netcdn.tw/app/431946152/how-tom-change-birthday-on-roblox-under-13-without-hacks-game-hack. The document's structure and embedded links suggest an attempt to trick the user into downloading or navigating to malicious content, likely a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9779

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.tw/app/431946152/how-tom-change-birthday-on-roblox-under-13-without-hacks-game-hack In PDF document text
    • http://elektrofahrspass.de/images/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/robux-free-youtube-aspire_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/roblox-hacking-class_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-get-free-robux-no-scam_GM431946152.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_004_off000055cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55CC 27448 bytes
SHA-256: 8440b5aa84dce41d10c6a6f2e7379a2422b329eec0ef0a4abfd21ec424f4e55a
font_01_sfnt_off00009355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9355 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D07 20440 bytes
SHA-256: 256ab3250cf9756b0aa35aaec0176de6cf005af3e26437eb03700074d8a412b0

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