Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ce07f58262505a2…

MALICIOUS

PDF

43.6 KB Created: 2021-05-11 18:38:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3bc191eaa6a9d4d9dcc86c9e19b7eec7 SHA-1: 40d599d4e95c265e93496824fa301cd92d37c830 SHA-256: 1ce07f58262505a25e6f9ce944aba9119d0a5ea3403880a35abb30654996890f
142 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which are part of a link farm designed to appear as legitimate resources for game cheats and hacks. The presence of a fake CAPTCHA heuristic indicates an attempt to trick the user into interacting with the document, likely to initiate a download. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to distribute potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-hack-mod-apk-download-game-hack PDF link annotation
    • https://repository.umgo.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/wurst-client-download_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.umgo.ac.id/repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004746.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4746 28656 bytes
SHA-256: f42864befe6342219a3c30f5194a7bb06f3fdf16aa4edcf7d4dfc1add7279a6a
font_01_sfnt_off00008763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8763 18472 bytes
SHA-256: 4c2b378107411dd89e89d15d6fc14f40e4cc39fe2ce380ce578c72ff76b0796b

Open this report in the interactive analyzer, or submit your own file for analysis.