Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4ec34e0960bce24…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 16:48:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 70e0062b744faebb7ae76ccbb78460c5 SHA-1: 6b03f800c13ad286e97187776b521ff21f7c2e3e SHA-256: e4ec34e0960bce2480de5a3e5f00112217676b818212ad0934a7582b029bdff0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action lure related to game hacks and generators, specifically targeting Roblox. The primary URL, http://netcdn.tw/app/431946152/roblox-old-avatar-game-hack, is identified as a malicious redirector. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering tactic to drive users to malicious content, likely leading to further malware downloads or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/roblox-old-avatar-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/how-to-hack-robux-with-es-file-explorer_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-exploit-2021-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/venesix-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-free-items-glitch-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/cerberus-hack-roblox-download_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/sk8-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-site-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/buxblast-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-no-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/where-to-buy-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hacks-para-roblox_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000316f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316F 22912 bytes
SHA-256: c62a15f7be58612a37cd54d293468c3ddd99db0376fa9966a7a6e3532639c4b3
font_01_sfnt_off000064e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E3 18880 bytes
SHA-256: 0980252146bad3bd724b35f26bd39d89a72e4afcd42327430f023e2bfb454902

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