Malicious PDF — malware analysis report

Static analysis result for SHA-256 6814c2fc0b941d82…

MALICIOUS

PDF

34.0 KB Created: 2021-06-29 05:18:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 5ddb17a393f32ff534ca3121a8d06e03 SHA-1: 6e9eaeeafbfe6059df9145ee41a8faf7a9def00d SHA-256: 6814c2fc0b941d8240d209cbe5072751f2d1f28b420d84ca1342b964d6bf2916
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or malware distribution attempt. The document body explicitly mentions 'Roblox Jailbreak Redboy Hack' and includes the primary malicious URL, reinforcing the lure. While no scripts were extracted, the presence of malicious links and the nature of the lure strongly suggest a phishing or downloader attack pattern.

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/roblox-jailbreak-redboy-hack-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/case-clicker-case-hack-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-eu5-net_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-acounts-on-roblox-that-have-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-task_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_off00002e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4F 22080 bytes
SHA-256: ef09e337066be8ab3134270759001b42ee70da4c36fbbcc07722db5a76b9db13
font_01_sfnt_off00005ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF9 19296 bytes
SHA-256: f6805665e9fd1e6836b82710abeb5c5cc9548449148471511e6dcfc2f0288eba

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