Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e3ed8b4423bc4dc…

MALICIOUS

PDF

35.4 KB Created: 2021-06-29 23:12:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e5c00aeecadd6fa6e74a41e15e698523 SHA-1: 5813ede34d5cc160125a56a6a860f53bd90e216c SHA-256: 0e3ed8b4423bc4dc70faca9054ddb99ab451a6f08ccf40ebed201897910cff18
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free Robux' and game hacks to entice users. It contains a large number of external links, many pointing to PDF files hosted on 'rivas-treuhand.ch', which appear to be part of a link farm designed to improve search engine rankings for malicious content. The primary URL http://netcdn.co/app/431946152/how-to-get-free-robux-no-download-no-survey-2021-game-hack likely serves as a redirector to further malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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-free-robux-no-download-no-survey-2021-game-hack PDF link annotation
    • http://rivas-treuhand.ch/images/how-to-hack-roblox-accounts-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/how-to-hack-roblox-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/ex-7-roblox-free_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/deleting-roblox-account-if-hacked_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/roblox-free-robux-hack-no-survey_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/roblox-name-for-free-gun_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/vehicle-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/how-do-u-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/free-admin-panel-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/free-robux-4all_GM431946152.pdfIn PDF document text
    • http://rivas-treuhand.ch/images/how-to-get-robux-for-free-grantz_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_off00002f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F15 22724 bytes
SHA-256: 952d1bd98d6a4a6048d8abcb6d5905962e847d0147f6881aa52a66d381b9ef15
font_01_sfnt_off000061fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FE 20096 bytes
SHA-256: c06d0fecafae6dde728f568df21880f065a87c0e3fd2cfb6d4de3df8aa7a63a4

Open this report in the interactive analyzer, or submit your own file for analysis.