Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a7e533a1deb58ab…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 09:02:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1e7d1104d629669566d80734a4d7b9b2 SHA-1: 5d82fa74bb5feccdc0245e7e63c7bb79e085da16 SHA-256: 5a7e533a1deb58aba99ba3412aefaaa4bfa5edb037415b76edf33ce849eba375
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://netcdn.online/app/406889139/hack-coin-master-free-game-hack PDF link annotation
    • http://pustaka.smpmuh2yk.sch.id//repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/earn-robux-sites_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/minecraft-tools_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/instant-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/pokemon-go-kanto-tour-free-version_GM1094591345.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-game-hacks_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
stream_004_off00004f33.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F33 25312 bytes
SHA-256: 3ba7c464a7e543b9d9e2366c700ca58eaa8df5747dad18986b218258d4b4790f
font_01_sfnt_off00008a01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A01 17880 bytes
SHA-256: 257aee740a5ae17e91b93ad4d540c168849f24efe28ef42b55966c96749a0114

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