Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bec07960bf0bcee…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 08:47:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d7d648ff694b4946eafc4e65ff3864ae SHA-1: 788925a0ca77c5c0b76d534be3edd8fc5786abb4 SHA-256: 2bec07960bf0bcee42ee3cd7fc8ef86000fbbea3ae24d1d0f057bf005a80eafc
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to websites that promise free in-game currency or hacks, acting as a lure for users. One primary URL, http://netcdn.tw/app/479516143/minecraft-the-complete-handbook-collection-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a pattern of SEO link farming and redirection to potentially malicious content, likely a phishing or scam attempt.

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.tw/app/479516143/minecraft-the-complete-handbook-collection-game-hack In PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-gen-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-many-tiktok-free-folowers-make_GM835599320.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/hacks-for-roblox-admin_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/bux-city-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-accounts-with-obc-2021-discord_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-hack-a-persons-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/robloxland-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-waterpark-noodle-for-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-elemental-battlegrounds-hacks-win10-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-use-cheat-engine-in-roblox-jailbreak_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_off00002f03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F03 22236 bytes
SHA-256: 71516fb9fa9702b6458e5a655ccf54d1e66feee90a78b1f712b9df737811f685
font_01_sfnt_off00005fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD7 19176 bytes
SHA-256: 8ec396ab0edcd5350af95c8174d137f9e9c86531615c70c60988a683ee7c57a2

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