Malicious PDF — malware analysis report

Static analysis result for SHA-256 13304ef8bf5dcb98…

MALICIOUS

PDF

36.0 KB Created: 2021-07-07 00:49:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9fcf64be423e48fca6a0595efb059956 SHA-1: d0b6c25ff455957a6fa4406c7fa24106553e7bc3 SHA-256: 13304ef8bf5dcb981151b00335be9a477a018cefcd36a571f736e75423727691
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 0.9980

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 http://netcdn.tw/app/431946152/robux-hack-generator-game-hack PDF link annotation
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/mcpe-download_GM479516143.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/como-hackear-una-cuenta-de-roblox-a-alguien_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/roblox-pokemon-go-hacks_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/become-roblox-admin-free_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/code-pour-des-roblox-free_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/games-that-give-you-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/im-hack-you-roblox-id_GM431946152.pdfIn PDF document text
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/actual-up-to-date-roblox-hacks_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_off0000362c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x362C 22476 bytes
SHA-256: c6d13700bd2fc795d35835fb3614fac633837666dcae4ea4672dfbaa720f4a30
font_01_sfnt_off0000683d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x683D 18824 bytes
SHA-256: 6a2f4fb47bcac7a1427eb84fb186ae35d3638566a93e34d85c8a35338f058712

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