Malicious PDF — malware analysis report

Static analysis result for SHA-256 1645a2c52793cbc8…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 15:27:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 08767a56550114ef681a9c8a0c298de3 SHA-1: 695d027774572a8f7550b51a6302fd4bb06b4213 SHA-256: 1645a2c52793cbc860f1d9837d45f7d9f0f5776e23ba6437d923a1706ae1da54
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are presented as lures for free Roblox gift cards or game cheats. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests a deceptive intent. The document likely serves as a phishing or malware distribution vector by directing users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/how-to-get-a-free-roblox-gift-card-code-pastebin-game-hack PDF link annotation
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-get-free-admin-commands-on-roblox-for-kids_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/dragon-ball-af-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-robux-gift-card-may-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/roblox-online-free_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/how-do-you-hack-roblox-ultimate-driving_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-roblox-accounts-discord_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-hack-phantom-forces-2021-roblox-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/what-to-do-if-your-roblox-acc-has-been-hacked_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-robux-press-g_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/roblox-xd-hacker-cheater-xd_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/hack-boku-no-roblox-remastered_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/free-robux-giftcard-may-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-hack-treadmills-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-hack-someone-in-roblox-without-their-password_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/badge-giver-script-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.industri.ft.unand.ac.id/repository/how-to-use-undetected-cheat-engine-on-roblox_GM431946152.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_off000030ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FF 22500 bytes
SHA-256: e641ab29d47b15a681266d8fb6011050f0850e26111d9487b2e7d217d7f7c9aa
font_01_sfnt_off00006342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6342 19364 bytes
SHA-256: 27816bc824ad69db023303e3d93530011f235840d580dd5b4eed82f2d7afb328

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