Malicious PDF — malware analysis report

Static analysis result for SHA-256 69cd5a2b25593e5b…

MALICIOUS

PDF

42.6 KB Created: 2021-05-11 13:30:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f7159537da4feeb25620a7a4f64b3135 SHA-1: 173aab9a54a53104baee0f20e7210501ab2506e3 SHA-256: 69cd5a2b25593e5b12f9323c9847add445eea226646265155bc1f3cf60263741
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external sites, many of which are structured as SEO link farms for game-related cheats and hacks. One prominent URL, 'https://netcdn.xyz/app/431946152/roblox-love.net-game-hack', is associated with brand impersonation for credential phishing, specifically targeting Facebook and Roblox. The presence of a visual download button lure further supports a phishing or scamming intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/roblox-love.net-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/431946152/roblox-love.net-game-hack PDF link annotation
    • http://regioliga.pl/images/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://regioliga.pl/images/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://regioliga.pl/images/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://regioliga.pl/images/coins-master-hacks_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/coin-master-hack-fast-org_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://regioliga.pl/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://regioliga.pl/images/facebook-coin-master-free-spins-link_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
font_00_sfnt_off00004848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4848 27172 bytes
SHA-256: 0f399fa76f19aa44fa630eef3dec0e8234b4058157eaf9db40f710f8e9b9b9cf
font_01_sfnt_off000084b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B3 18068 bytes
SHA-256: fe35306929b94325ea86c99230995725fbd97be1cac0c99c4fec7373eed6d4f8

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