Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a43a0b70cb52796…

MALICIOUS

PDF

43.7 KB Created: 2021-05-12 16:01:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 15c8bebd928ff4f4c9477238adbf2e07 SHA-1: 150c595227c960365aab12effe19095f4fe11a1a SHA-256: 1a43a0b70cb527962adbb60480acc861015d04ea7a65bd161b68ff480a8df300
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/easy-robux-today-com-game-hack PDF link annotation
    • http://enosiderma.gr/images/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/robux-earner_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/coin-master-hack-game_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://enosiderma.gr/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://enosiderma.gr/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://enosiderma.gr/images/coin-master-32-hack-apk-download_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
stream_003_off00004a8d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8D 25944 bytes
SHA-256: 9b3e3227d11ad1134d7eae6c8f1aab5c785b7d8f6a9367d5a24552bb8b76b961
font_01_sfnt_off00008729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8729 18692 bytes
SHA-256: 73d558874ba1f93a48afe8e813aec995f67c91820d85dfc512325dae3e965bb9

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