Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebd5811a02a5e652…

MALICIOUS

PDF

35.1 KB Created: 2021-06-26 03:43:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8c347385f7a4cf67093bcaf7621fad9a SHA-1: ea84d2aa06919c0bc17f03938f7bfc36c87c07dd SHA-256: ebd5811a02a5e65266c6a1bf13197becbff002a3db75a18ff7d81c3b766e7329
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a 'download button' lure, strongly suggesting a phishing or scam attempt. The document body and extracted URLs indicate a lure related to game hacks and free in-game currency for games like Roblox and Coin Master. The presence of external links and the ML classifier's high confidence score support a malicious verdict.

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/free-promocodes-for-roblox-game-hack PDF link annotation
    • http://poltekkesbanten.ac.id/e-lib/repository/el-mejor-hack-para-roblox-marzo-2021-tutorial_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-be_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-hacks-vermillion_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-hack-add_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-no-download-app-but-play-for-free_GM406889139.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_off00003345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3345 21996 bytes
SHA-256: a046f5b28222420834bb4969296276e21888e36c0153c6c3c96ba3f9489086b4
font_01_sfnt_off000063be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BE 19236 bytes
SHA-256: 11900ee6601a30c2af3d667c1df83c75be870175d7ab73d639cd98affa0fa93c

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