Malicious PDF — malware analysis report

Static analysis result for SHA-256 71eef4f71264d451…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 09:47:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ddcdaeb2c455e735c8616de905da3bf7 SHA-1: 1424cbda512b389e2fbc3af08f2d4d4435aa7eb3 SHA-256: 71eef4f71264d451caa246174676a256a3508c4f8cfa4264410b17be8e099748
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to 'http://netcdn.tw/app/431946152/devil-roblox-shirt-free-game-hack', which is identified as a lure for game hacks. The document's content and the high-confidence heuristic firings strongly suggest a phishing or scam attempt designed to redirect users to potentially malicious sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/devil-roblox-shirt-free-game-hack PDF link annotation
    • http://digilib.stimlog.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hack-roblox-download-pc_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/ro-cash-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-hack-bleu_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-ad-maker-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/well-hack-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-elemental-wars-free-rolls_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-accouts-that-work_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-afro-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/earn-robux-online-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/when-is-john-doe-going-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/https-www-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/fake-roblox-online-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C6 22772 bytes
SHA-256: bb44b97ca21f40bbaa3ad6e78f5ad8b46c49bac5575e419a9d856852c9bcd9e9
font_01_sfnt_off000063e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E6 19320 bytes
SHA-256: fb509adc06761c7dd3b56d97ab7da8d61c2fbe398f612ef230d31e564bff0998

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