Malicious PDF — malware analysis report

Static analysis result for SHA-256 9238c205bcf87cb9…

MALICIOUS

PDF

49.8 KB Created: 2021-05-16 20:48:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8a41966b56fdccde5b2e1e4b7698eb9c SHA-1: c84d94b217c79e4413df6597d14440b855255c6d SHA-256: 9238c205bcf87cb994225051b2d5db335218c5ad86bd2eb974b14f36058202d8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a lure related to 'free Robux' and game hacks, strongly indicating a phishing or scam attempt. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of numerous related URLs confirm this. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, likely to a site designed to steal credentials or deliver further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9330

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 https://netcdn.xyz/app/431946152/free-robux-stream-game-hack PDF link annotation
    • https://vierabyragazze.com/upload/files/robux-claimer_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-demon_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-verification_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-attacks-coin-master_GM406889139.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4942 26324 bytes
SHA-256: 1fa7690198e36f092cb423691652dbec84f63606b43f8fa33a6984dd9c532247
font_01_sfnt_off00008538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8538 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000091da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91DA 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off00009eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EEB 18608 bytes
SHA-256: d58c1050c241e8596ad00b07d95ef71c6ad75f8aac12cbee34afc6366c1e008e

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