Malicious PDF — malware analysis report

Static analysis result for SHA-256 03836ab0bea23180…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 12:31:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f139d4c6bba375080c9fe07e735acc27 SHA-1: cc109dc478d2f3e39ca2a0709ed83199cc32b98b SHA-256: 03836ab0bea2318086ca6362f81a44d012f44a89341f689ccb8379d190768b5a
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 0.9980

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/what-is-robux-game-hack PDF link annotation
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-make-robux_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/robux-prices_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/robux-adder_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/roblox-hack-comment-avoir-de-largent-facilement-sur-jailbreak_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-clothes-on-roblox-without-bc-2021_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-earn-robux-for-free-2021_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_off00003243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3243 22092 bytes
SHA-256: 4adac9109fc25df7a82d402020e2bb8c9a8b470eac88cc0b0c23045054499f54
font_01_sfnt_off0000634e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634E 19020 bytes
SHA-256: 1f095fbaada2d771d7bc4ba623b582b34f8145ca62f541118b0a68bd13fce424

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