Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9be1e5daacde1be…

MALICIOUS

PDF

43.1 KB Created: 2021-05-14 18:26:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 25922105da57cecf997d36e5c7fd9b11 SHA-1: 689e26cbd53d8ea3e537dceef47c7ccd53d8e542 SHA-256: e9be1e5daacde1bed85d86b4890d0f0e3eafc459c70b0455cfcaeb7196088912
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The ML classifier and brand impersonation heuristics strongly indicate malicious intent. The document body and embedded URLs promote downloads for games and mods, likely leading to malware. The primary lure is a link to 'coin-master-mod-version-free-download-2021-game-hack' hosted on netcdn.xyz, which is a strong indicator of a credential phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/coin-master-mod-version-free-download-2021-game-hack.
  • 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/406889139/coin-master-mod-version-free-download-2021-game-hack PDF link annotation
    • http://bc97.de/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://bc97.de/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://bc97.de/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://bc97.de/images/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://bc97.de/images/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://bc97.de/images/daily-spin_GM406889139.pdfIn PDF document text
    • http://bc97.de/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://bc97.de/images/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://bc97.de/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://bc97.de/images/i-want-robux_GM431946152.pdfIn PDF document text
    • http://bc97.de/images/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://bc97.de/images/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://bc97.de/images/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
    • http://bc97.de/images/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • http://bc97.de/images/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://bc97.de/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://bc97.de/images/roblox-a_GM431946152.pdfIn PDF document text
    • http://bc97.de/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://bc97.de/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://bc97.de/images/best-free-spins-link-coin-master_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_off00004b43.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B43 24932 bytes
SHA-256: 0c383c468c4a0e10397f098bf58c667fd68c3c33cb81c53ac811b67605029c81
font_01_sfnt_off00008486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8486 18828 bytes
SHA-256: a598b42d9a48773d6341083c87d11731207fc04ba09b790c047c21c199be1ca0