Malicious PDF — malware analysis report

Static analysis result for SHA-256 e032d7675cd31652…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 20:15:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 11bada2818ff877a73133cfe9d7f232c SHA-1: fbeca965160f1bacfff292bebae6a0aa999def31 SHA-256: e032d7675cd316529517b438db9573230ff61960807fc5f491db80c18d867cf7
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links disguised as game hacks and generators, a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of many external URLs strongly indicate a malicious intent to redirect users to potentially harmful sites. No scripts were extracted, but the document's structure and content point towards a social engineering attack.

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.tw/app/431946152/roblox-hack-generator-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-hack-roblox-for-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-ways-to-get-robux-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/promocodes-roblox-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-hotel-empire-tycoon-cheats_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-cheat-in-roblox-games-defenders-of-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-citizen-exploiter-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-today-ad_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-hack-bars-pc_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/cheat-engine-hack-in-roblox-high-school_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/tiktok-free-tools_GM835599320.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/hack-for-roblox-martial-arts_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3161 21596 bytes
SHA-256: e0d0d19a6f9edc8acb11f6de571b65703ea9b9fe2bc04a6f8d0e060fd6d8b5d5
font_01_sfnt_off000060be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BE 18760 bytes
SHA-256: b79899937f6f59d67c0cc016ae9e295c0b2eeda93cfd6b0750b290eebb9c7341

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