Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3131d13b5667098…

MALICIOUS

PDF

34.0 KB Created: 2021-06-26 06:29:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 03dd5c48edb3e5fa73a43e421b3a9848 SHA-1: 0951300d4bf1dc4ca025d60c5eacac114941527c SHA-256: e3131d13b5667098925baa8e9cff6f75d42e6a030355b1d7b5971de44c09b001
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to trick users into clicking malicious links. It contains numerous links to redirectors and link farms, designed to lead users to potentially harmful content. The document's structure and embedded links strongly suggest a phishing or scamming attempt, likely serving as a delivery mechanism for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/how-to-look-like-a-hacker-in-roblox-robux-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-hack-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-whatever-floats-your-boat-level-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-fast-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-lumber-tycon-2-menu-no-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-2021-september_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-dragon-ball-online-cheat-codes_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/xray-hack_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-free-net_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-do-u-hack-accounts-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-teeshirt-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/obby-for-free-robux-real_GM431946152.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_off00002da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA1 22488 bytes
SHA-256: c69315d17881eaa3348b205ac1144615e3b3eec193d9e325f606b1e86d13839a
font_01_sfnt_off00005fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC5 19080 bytes
SHA-256: 0abd08e5e2b05b3d312596faa1b13cad71c4a80207f17b5e3edcafee0745d5f4

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