Malicious PDF — malware analysis report

Static analysis result for SHA-256 da46ca8e7a2b3fff…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 02:34:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1bd240f9672e1ebec52b9e5c4dae8f9e SHA-1: 55de9f2e6ce337b0a6e26b41bca37a91f93c26fc SHA-256: da46ca8e7a2b3fff3c15b3301eaed4f881c8aa5939bdb93e0e628b9648251f26
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document uses a 'free Robux generator' lure, which is a common tactic for phishing or malware distribution. The embedded URL points to a suspicious domain that likely hosts a malicious payload or redirects to a scam page. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a malicious intent to trick users into downloading further malware or divulging information.

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/free-robux-codes-may-2021-game-hack PDF link annotation
    • http://amcoeur.org/images/html-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-to-use-roblox-ads_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-unused-roblox-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/knife-hack-for-assassin-roblox_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/como-usar-cheat-engine-en-roblox-dragon-ball-rage_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://amcoeur.org/images/roblox-counter-strike-hacks_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://amcoeur.org/images/roblox-minigunner-free-robux_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-robux-giveaway-no-human-verification_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/inspect-roblox-hack_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/actual-free-robux-noothing-reques_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/roblox-robux-hack-cheat-engine-64-2021_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-hack-on-roblox-3-simple-steps-youtube_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/free-robux-cash_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/how-to-hack-other-people-roblox-accoubt_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • http://amcoeur.org/images/free-robux-ipad-2021_GM431946152.pdfIn PDF document text
    • http://amcoeur.org/images/roblox-how-to-free-adidas_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_off00002de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE7 22396 bytes
SHA-256: ee8d98a8d7755b774ecb505b1ce2b87078a4aa5d0851b02a1bf457ed6127ad70
font_01_sfnt_off00005fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC1 19668 bytes
SHA-256: f08509cc1228082632fbbf0fdc69d8c871a9f1b853e4f0e678bfaaba21f53fba

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