Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a9118fdce28ef64…

MALICIOUS

PDF

33.5 KB Created: 2021-07-19 07:34:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 38dc4ef15a81b92fff4b74c61d30a6ac SHA-1: e4466628057ca7f9bb3154eb20e3bb5c81e45d84 SHA-256: 9a9118fdce28ef6410b8bf08ffb08a59efe472525761949bb6bd9f90205de818
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a game hack redirect lure, pointing to a URL that likely hosts malicious content. The document body and embedded artifacts suggest a lure for game-related cheats or generators, which is a common social engineering tactic. While no scripts were explicitly extracted, the presence of embedded URIs and the nature of the lure indicate a potential for downloading further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/479516143/minecraft-skins-download-free-game-hack PDF link annotation
    • http://unifieo.br/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/free-tiktok-like_GM835599320.pdfIn PDF document text
    • http://unifieo.br/images/free-robux-with-no-verification_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_off00002c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0D 23232 bytes
SHA-256: 57e18f868c01193c442c395a452026ba39c62a96768482b803bfa787bb12b177
font_01_sfnt_off0000605e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x605E 18460 bytes
SHA-256: 54d3aeb7b3beebea3cfa48561b043312cf5d8c01a954df644a6f0691dd3f9e10

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