Malicious PDF — malware analysis report

Static analysis result for SHA-256 660338109f054b97…

MALICIOUS

PDF

45.2 KB Created: 2021-05-16 12:53:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c2e49c724a36ab849df8c1c185e2ebb2 SHA-1: 5008669d3db14d6434514359d646131b787d163c SHA-256: 660338109f054b978a854f4e3ffd4cc0310facc99bbf066781c69f74bedd92ac
82 Risk Score

Malware Insights

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

The PDF document contains a lure impersonating Microsoft, directing users to a link that promises a guide on creating a free Minecraft server. This is a common tactic for credential phishing or distributing further malware. The embedded URL and the ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/479516143/how-to-make-a-minecraft-java-server-for-free-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/479516143/how-to-make-a-minecraft-java-server-for-free-game-hack PDF link annotation
    • http://atmos-service.com/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://atmos-service.com/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://atmos-service.com/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/coin-master-app_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://freegiftcodes.euIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c12.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C12 24784 bytes
SHA-256: df3769e5c154b7754e0ef555d79c46ee36d65245458610cef047695a619c415a
font_01_sfnt_off0000846d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x846D 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off00008e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E2B 18324 bytes
SHA-256: 8dc142bc7e6132cc43f81519c448dbddadbc7e5fdd921c0c5040c748722dd43f

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