Malicious PDF — malware analysis report

Static analysis result for SHA-256 82eb914573fc7a12…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 10:32:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 29ba829ff95a21e271453eeb9cbbcdd3 SHA-1: d4f02b7532b414cdda7f0c404e4d57b96cb6c487 SHA-256: 82eb914573fc7a12a04bd5e8c29ed229a1d984861ace0b39f994fd6fb48846c2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9865

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.online/app/406889139/hack-de-coin-master-game-hack PDF link annotation
    • http://oca.undil.tl/repository/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_004_off00005234.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5234 25280 bytes
SHA-256: 26be722519cbf4ebfbda5d6407178c4fe566adbb255e433f8212db206021857b
font_01_sfnt_off00008c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5B 17884 bytes
SHA-256: fe1f543f7e0d5456aa533f199736749e60ab2e23c1ee6e9e48397ebfc3747ba6

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