Malicious PDF — malware analysis report

Static analysis result for SHA-256 8811694c9caf007e…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 04:27:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 62ae790f53b275802dc63337fba726d9 SHA-1: 261d1e2b1f931e7d1512bf6bfdeb2220a4b0349d SHA-256: 8811694c9caf007ed44eecaace6479bd253588d8725d7bac92d18c78ef8c1a4b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to potentially malicious infrastructure, specifically advertising 'game hacks' and 'free generators'. The primary redirector URL is http://netcdn.co/app/431946152/view-noclip-hack-roblox-game-hack. While no scripts were explicitly extracted, the presence of malicious redirector links and the lure of free in-game items strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/view-noclip-hack-roblox-game-hack In PDF document text
    • http://elibrary.perludem.org/repository/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-hack-pacht-fix_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-earn-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-5-ways_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-admin-on-roblox-games_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-and-obc-generator_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-hack-free-robux-download_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-character-customizer-free_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/20210-robux-free_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_off0000309d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309D 22656 bytes
SHA-256: 9a6b0397262ba5255cd30204af0e520e28c663d609169ac9305df65d49fa7811
font_01_sfnt_off000062db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62DB 19252 bytes
SHA-256: dcfd783f6edfd11c74458ea14e8556a7e4c216ade6189fdd42d7d067148c7a93

Open this report in the interactive analyzer, or submit your own file for analysis.