Malicious PDF — malware analysis report

Static analysis result for SHA-256 0239b80e98c9dd50…

MALICIOUS

PDF

46.8 KB Created: 2021-06-08 16:50:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 1d7381a83d169751895fb23f138e60cf SHA-1: 96b2112daf4a3396787873bf6be99161900fb055 SHA-256: 0239b80e98c9dd506bd6015a289d504e8d1e38a128000f733d1744a5e1ca0b51
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacking tools. The ML classifier also flagged this PDF as malicious. The presence of a visual download button further supports the lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 https://netcdn.tw/app/431946152/how-to-hack-roblox-with-cheat-engine-5.6.1-game-hack In PDF document text
    • http://heilzentrum-ulm.de/images/wearedevs-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/hack-roblox-jailbreak-espaol_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/free-roblox-gift-cards-live_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/how-to-install-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/fun-games-to-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/roblox-hack-strucid_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/tiktok-free-followers-hack_GM835599320.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/free-robux-hack-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/can-we-hack-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/roblox-booga-booga-mojo-hack_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/adopt-me-roblox-money-hacks_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
stream_004_off0000554b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x554B 25688 bytes
SHA-256: dd451a6b20fd2fbd07864697f1c06f09d2d893e67b97db4e8dae5f549728db23
font_01_sfnt_off0000902d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x902D 19696 bytes
SHA-256: 0eb9eaf29d0fe915d77bcb8df8612e2f3a6c1a5034f5d116d165b4e1ce16d841