PDF malware analysis — malicious · f0fca2ec861d2938

MALICIOUS

PDF

35.4 KB Created: 2021-07-09 03:48:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: d44021d5b3e579022f17a30d0f0bab2a SHA-1: ce373d2a346325b9ac914d6b29740490d097c4bf SHA-256: f0fca2ec861d29384d28a064e51acc98486b96bb09f4aa1ea1193e18c0f7dc1b

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and game hacks, directing users to external URLs. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' indicates a high likelihood of this being a social engineering tactic to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to facilitate the download or redirection to a malicious payload, likely using embedded JavaScript for obfuscation or execution.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

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/how-can-i-get-free-robux-game-hack PDF link annotation
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-robux-instantly_GM431946152.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-robux-21-01-2021_GM431946152.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/http-hack-roblox_GM431946152.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/promo-code-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-robux-roblox-11-14-16_GM431946152.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-jailbreak-roblox-vip-server_GM431946152.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/how-to-get-a-hacked-roblox-account-back_GM431946152.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-robux-mod_GM431946152.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/panel-for-pubg-uc_GM1330123889.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/roblox-free-items_GM431946152.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/roblox-c9m_GM431946152.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/roblox-master-hand-hack_GM431946152.pdfIn PDF document text
- http://johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/hacks-of-roblox-for-cmds_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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000346c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x346C	22108 bytes
SHA-256: `8bbc07ce15373c773675a1f8fe027074d8a20a6cf02a34f3164cb7a8094f4abd`
`font_01_sfnt_off00006595.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6595	18984 bytes
SHA-256: `88d69eb3e5aacbb9415b7e9d5cab519469ee3fdfdf18acc61836835876a3bab2`

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