Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bfad251d55b804e…

MALICIOUS

PDF

35.3 KB Created: 2021-06-28 02:52:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 97a07c1555d68d2ed8e56f4af3ce33e6 SHA-1: e87e231ebcc2b5aad138a831e0ea923633fe5165 SHA-256: 2bfad251d55b804e1eff9acbef42d84d4b80b9f8ce6268646a5b2cfd7602a4ca
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering game cheats and hacks. The presence of a download button lure and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful content. The document's structure and content strongly suggest a phishing or malware distribution attempt.

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/roblox-cheat-engine-robux-2021-game-hack PDF link annotation
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/play-roblox-free-online-now_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/im-hacking-ur-account-roblox-music-code_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-free-catalog-items-blogspot-com_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/best-free-non-virus-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-can-i-get-free-robux_GM431946152.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_off00003164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3164 22432 bytes
SHA-256: bc2f9ab3fe659fe12157483b57197fa47a92658deb1dcb44ea4ae2dcca6e3b4b
font_01_sfnt_off000063a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A2 19420 bytes
SHA-256: acccf99aba485f84e7df41928933d39d4b2dbb26759015d7c1840eae17f8a41e

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