Malicious PDF — malware analysis report

Static analysis result for SHA-256 eba8e17678948563…

MALICIOUS

PDF

43.8 KB Created: 2021-05-10 22:31:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 79e5394a2ed4c27e37b83082d11b0157 SHA-1: df19e042f80d57ff3f3e2a6f6f6bed456dbb56c5 SHA-256: eba8e17678948563abbae7f5ac8f8b787fb87498a3315332ee3ff2769a56348b
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 0.9969

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.xyz/app/431946152/can-i-get-robux-for-free-game-hack PDF link annotation
    • http://uristdona.ru/images/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://uristdona.ru/images/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://uristdona.ru/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/code-free-robux_GM431946152.pdfIn PDF document text
    • http://uristdona.ru/images/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://uristdona.ru/images/coin-master-free-spins-hack-without-human-verification_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_003_off00004ab9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB9 26720 bytes
SHA-256: c4bd8a62d9674bbe0810972da4e5bc42a1ec459c059ae0c4c068e24d3e7a2cfc
font_01_sfnt_off000088ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CE 18344 bytes
SHA-256: 56a64ad9af2fab004080c55c49ec35472f3c2134e95e40197be892b268dd39d5

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