Malicious PDF — malware analysis report

Static analysis result for SHA-256 86a5f2a6a3ea48e2…

MALICIOUS

PDF

36.7 KB Created: 2021-07-03 11:22:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 107071a7290c48ecbbcfe1fc1b8a0044 SHA-1: ee40ff10fae3793936ceec74b743375aaac2e2ed SHA-256: 86a5f2a6a3ea48e2d9e1e8baeb24bcd60b21d885d9d0dd30a7e68a6c30ec8710
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/roblox-adopt-me-hacks-2021-game-hack PDF link annotation
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-robux-generotor_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/hack-para-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/how-to-get-free-wings-in-roblox-2021-may_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnsamarinda.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000034e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34E5 22900 bytes
SHA-256: ee7db5570bd33124895c8f0599a8be844c90b6a620ad16fa100d283ba14eadaf
font_01_sfnt_off00006843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6843 19708 bytes
SHA-256: 3e7968c6009158f39a26a5e9beb619e98d82cfcdddd9bb58ca36d4861618e68e

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