Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4a96ed9d99e896d…

MALICIOUS

PDF

35.1 KB Created: 2021-07-01 14:38:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 44ba3c27a12969b66ef0d3b171bb45ec SHA-1: 97ae5a52e83014f09e74bdc10d6ac59856a57677 SHA-256: c4a96ed9d99e896d0064ef1e1c878f6720c6f7d52091e76b4c39ec7f9caa739d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free Robux generator" which redirects to a malicious URL. The ML classifier strongly indicates maliciousness, and the embedded link is a common tactic for phishing or malware distribution. No scripts were extracted, but the document's structure and embedded links suggest it's designed to trick users into visiting a potentially harmful site.

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.co/app/431946152/how-to-get-free-robux-100-real-pc-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/google-how-do-you-get-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-codes-2021-a-buch-of-uses_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/dll-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-explorer-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-robux-pastebin-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-for-roblox-2021-genorat-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-generator-roblox-game_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-make-clothes-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/pokemon-go-free-game-download_GM1094591345.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_off00002ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFB 22788 bytes
SHA-256: a54a71a3ed82a20caf917d7fdc2d44f3c6a4f006fee03d37215b8368561fd328
font_01_sfnt_off000062d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D5 19492 bytes
SHA-256: 98cdb6a8e7c2248fe817abb78cac5bc4517e0094dae030eab3cc10753ca5fd92

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