Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea473932d69e44e9…

MALICIOUS

PDF

33.8 KB Created: 2021-06-26 14:10:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b1e44a3627bfa5688c51630c35db29db SHA-1: 7031882bbf813db9f1bfbfe67f2d921d9099b44a SHA-256: ea473932d69e44e9c7dc442c197d6c6298ffba3494c4ceed01f39bd1ef1bbd4a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency ('Robux') and links to known malicious redirector infrastructure. The primary link, http://netcdn.co/app/431946152/how-to-get-1-robux-for-free-game-hack, is identified as a malicious redirector. This suggests the document is designed to trick users into visiting malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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 http://netcdn.co/app/431946152/how-to-get-1-robux-for-free-game-hack In PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-hack-someone-on-roblox-on-a-phone_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/cool-free-things-on-the-catalog-for-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/rs-free-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-hack-into-roblox-that-work_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/inspect-element-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/case-clicker-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-youtube-how-to-play-bloxburg-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-shirts-roblox-happydave_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-hack-adopt-me_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBD 21748 bytes
SHA-256: 78cd0069dce803b4b122a8b9fdd8a2c62c75a2306321707ca03e202a198f94e5
font_01_sfnt_off00005e9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9C 19088 bytes
SHA-256: fed4baeccf20d3119d5a2ffd11c60db61cd13f5d119ba5425ba4c135116b643c

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