Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e243628ec6a6c3f…

MALICIOUS

PDF

33.2 KB Created: 2021-07-05 10:43:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2dd5d0b1bfbd820d1e179481f027b713 SHA-1: 655418e88a578a3363750acce9efc4f3149eb5e2 SHA-256: 9e243628ec6a6c3f37adb9c75287e6c9e7a78caaf6a817df8cd9fbcf6732ffa2
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a specific URL (http://netcdn.tw/app/431946152/how-to-hack-pepoles-roblox-account-game-hack) that are presented as resources for game hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for cheats. The ML classifier also strongly flagged this PDF as malicious. The presence of a 'download button' lure further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • 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.
  • 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 http://netcdn.tw/app/431946152/how-to-hack-pepoles-roblox-account-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hacks-for-roblox-script-reader_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-a-roblox-account-easy-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hack-safe-download_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/the-cheat-code-in-roblox-wonderland-games_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-no-survey-generator_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/blox-best-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-swordburst-2-hack-download_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-blue-tshirt-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-how-to-get-free-clothes-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-do-u-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-https-coinms-net_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
font_00_sfnt_off00002b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7A 22092 bytes
SHA-256: a9f4998a10c59fece18323048fd26e7b6b883d73f1718d02449859c9a4e52677
font_01_sfnt_off00005c47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C47 19208 bytes
SHA-256: 96e0833fb2647929e99da8ece822054706a1372c6e8b86eae3da0af69c2bf4c1

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