Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fbd0d324254c87c…

MALICIOUS

PDF

32.7 KB Created: 2021-07-19 20:52:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ddc54724a34dad7319f9ad762186066c SHA-1: 38f59e548f56dff3d620bf600c8b4ec87a7e1520 SHA-256: 3fbd0d324254c87cf0e05ee8b471342985f31c96bd89653cf8e18f6b1363c1db
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free game hacks' and directs users to a suspicious URL. The embedded content and heuristics strongly suggest a phishing or scam attempt designed to redirect users to malicious sites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious intent, likely to deliver a second-stage payload or lead to credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/free-roblox-accounts-with-robux-that-work-2021-game-hack PDF link annotation
    • https://trustindoutama.com/assets/CKImages/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/is-tiktok-free_GM835599320.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/coin-master-free-spins-link_GM406889139.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_off00002979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2979 21876 bytes
SHA-256: cddaeaf4708185aff00c59df2f4923180199e6b91511e2a3ae6a7a881de7a1d8
font_01_sfnt_off0000597b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x597B 19664 bytes
SHA-256: 8bae07e728b427e96174baf89e971ad8e2c74617409806078ebf0a16f21879c4