Malicious PDF — malware analysis report

Static analysis result for SHA-256 48abbde209f89fa5…

MALICIOUS

PDF

33.4 KB Created: 2021-07-04 02:07:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ee6a23313338e4904bd19728d37be977 SHA-1: efd27178b034cb1042a33882744b5f9c52d34a24 SHA-256: 48abbde209f89fa53aca05938ffca3b706a88ed1aafbeb0c223b5c4ebfe41302
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are hosted on domains associated with SEO link farms. The document body and extracted URLs suggest a lure for game cheats and hacks, likely intended to lead users to download malware or engage in phishing. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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.tw/app/431946152/free-games-like-roblox-game-hack PDF link annotation
    • http://www.stttekstil.ac.id/elib/repository/roblox-deadzone-item-hack_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/alone-roblox-how-to-get-free-cash_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-how-to-make-your-own-shirt-for-free_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-free-robux-t-shirt_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-project-pokemon-free-pokemon_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/trigon-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/fly-hack-roblox-tm_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/break-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-hack-in-roblox-using-cheat-engine_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_off00002cfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFC 21824 bytes
SHA-256: 5d76ae8e05dd19cc0a57ea378bbd4a1592ab7b957f2de49495ff707b7526d438
font_01_sfnt_off00005d14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D14 19200 bytes
SHA-256: 5a76770402f9f54129e6e851f2a2ed8d0409cdca6ea1a763283255a31589df9a

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