Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d76fa944c78c442…

MALICIOUS

PDF

36.1 KB Created: 2021-06-26 04:12:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1d0dd52ef7c23bf4cf823805a42008ae SHA-1: a65020c2d493226c297a298763320b738dd9db60 SHA-256: 3d76fa944c78c4428a3d703cee36038dfed4223f8cd24811edf909f03e4041d3
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/free-uncopylocked-roblox-games-mega.nz-game-hack. The document body and heuristics suggest a lure related to free games or in-game currency, designed to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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-uncopylocked-roblox-games-mega.nz-game-hack In PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-coins-and-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-blox-piece-roblox-give-mod-menu_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-how-to-get-free-gear-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/ifinite-robux-no-hack-or-surver_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-re_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/descargar-hacks-para-roblox-jailbreak_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_off00003498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3498 22056 bytes
SHA-256: b049a639b1a51f7143df521ec7634d46db18955c34dd485c3311b9c0a3a565a7
font_01_sfnt_off0000656a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656A 19956 bytes
SHA-256: 4e76f96e8175c732363a7dd1237c8fa066f830a05f35851c2e083d96cab12325

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