Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e99bd07c75d8d4e…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 16:15:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: eeee9cb446b8bbbf041e01cc1cb7f292 SHA-1: 1ea848833878752a4e7ae2e71264df22bff237d3 SHA-256: 4e99bd07c75d8d4e72055ff319969a830c2a910c2d685013b283c3eeded7721a
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/406889139/best-coin-master-hack-game-hack PDF link annotation
    • http://psb.sd-alazhar29.sch.id/repository/free-unlimited-robux-hack-working-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-gift-card-codes-march-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-hack-elemental-battlegrounds_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-murdermystery-free-online_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/ming-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-roblox-gift-cards-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-use-synapes-roblox-hack_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
stream_002_off000032d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32D6 22904 bytes
SHA-256: 642721b50424c078a7464d4f88e92811484aec6c7062fe9e7c817e4d49ca6adc
font_01_sfnt_off00006631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6631 18220 bytes
SHA-256: 74b991809cd941a33c314a0b8a4aa7d995701b9bc4142046794dc3ba8ed8ff01

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