Malicious PDF — malware analysis report

Static analysis result for SHA-256 91406119b511bd36…

MALICIOUS

PDF

34.7 KB Created: 2021-07-19 09:20:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6cf94fa0c78674a821f2d5fac85156db SHA-1: aa1c530c16c0c4b57425c7358c801a654630b387 SHA-256: 91406119b511bd3692c99a20d1966e131021648b780e6c21bcb6943ba41d6669
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are presented as 'free generators' or 'game hacks' for popular games like Minecraft and Roblox. The primary lure directs users to 'http://netcdn.tw/app/479516143/free-modded-minecraft-server-hosting-game-hack', suggesting a social engineering tactic to trick users into downloading or executing further malicious content. No scripts were extracted, but the presence of numerous malicious-looking URLs and the 'game hack' lure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

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/free-modded-minecraft-server-hosting-game-hack PDF link annotation
    • http://www.eurosan1.ba/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://www.eurosan1.ba/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.eurosan1.ba/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.eurosan1.ba/images/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • http://www.eurosan1.ba/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.eurosan1.ba/images/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://www.eurosan1.ba/images/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://www.eurosan1.ba/images/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://www.eurosan1.ba/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.eurosan1.ba/images/free-minecraft-printables_GM479516143.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_off000031fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31FA 23068 bytes
SHA-256: 5a5e77b42ff4e18ccae448cbd21e85b2c7fe4b1ec3469e2a98a02abd237e1acd
font_01_sfnt_off000065ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AD 18284 bytes
SHA-256: 4ae19380f71872a59bca81a6826a2f1ac99dae3e110f9987d961b4518a9677d8

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