Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0969ae1a0329f3e…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 10:28:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 637a48e66c0bb3e5531c603bdcd65940 SHA-1: bc2333715ae18984c9df603fe760298e7c3a2453 SHA-256: b0969ae1a0329f3e2bf6af074885e216ca965d74f85ef927bf9b7a69303fe5d5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The primary URL, http://netcdn.co/app/431946152/free-robux-discord-servers-2021-game-hack, is identified as a malicious redirector. The document body and heuristics confirm the intent to redirect users to potentially harmful content, likely for phishing or malware distribution.

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/free-robux-discord-servers-2021-game-hack In PDF document text
    • http://lib.kunci.or.id/repository/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-any-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-free-clothes-on-roblox-games_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-do-you-get-robux-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E0D 22856 bytes
SHA-256: 24aa55904350aa28862548c4d52c289afc1e0ebc4fc281ea8d7f0cde0a01ba95
font_01_sfnt_off00006100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6100 19692 bytes
SHA-256: 62d1e6434340c29724d03a40ff0c148c9cc03cb095be97a7ed3692c7338e83f3