Malicious PDF — malware analysis report

Static analysis result for SHA-256 e464097e69b0c4c9…

MALICIOUS

PDF

35.0 KB Created: 2021-07-07 13:18:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 11c991b383cb8b04cf7bbe1088ae5965 SHA-1: 5739f72a8f9a615518f0447b44773a56fe056021 SHA-256: e464097e69b0c4c94f8e6c04773f298289b6c2c0c058a6e05d7e715e97e9ea60
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that promise game hacks and free in-game currency, such as 'hackear-coin-master-2021-game-hack'. These links are identified as belonging to known malicious redirector infrastructure. The document body and embedded links suggest a social engineering lure to trick users into visiting potentially harmful sites, likely for credential harvesting 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.tw/app/406889139/hackear-coin-master-2021-game-hack In PDF document text
    • http://lib.akper17.ac.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-do-i-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-hack-pizzeria-roleplay-remastered-roblox-money_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/pokemon-go-5-free-raid-pass_GM1094591345.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_off000032fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32FC 22680 bytes
SHA-256: d4960a1e3926df7768f9101537db375a6951d7679527e910079cbd8328279038
font_01_sfnt_off0000658e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658E 18408 bytes
SHA-256: e12145284ed43bacda9ea04b287d11ad422f80f0b9ba3e5eb455bf472c7ad3e4

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