Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d41ebc5bb7673d2…

MALICIOUS

PDF

47.6 KB Created: 2021-05-15 11:51:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9326b14abe21c76ae8d4e2f7ed9c1f3d SHA-1: 5f5bdae6030afab9a8535ffbedaab76273414bef SHA-256: 7d41ebc5bb7673d2e3b1b356e512c42eec861bfc0857b8ae7c34c536191483ae
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded URLs and a document body that impersonates Microsoft to lure users into downloading a "free game hack". The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests it is designed to download a second-stage payload. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/479516143/minecraft-java-edition-download-free-game-hack.
  • 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/479516143/minecraft-java-edition-download-free-game-hack PDF link annotation
    • http://hilro.co.za/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/roblox-account-taker_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CAB 31280 bytes
SHA-256: 8f511a7efe5451e51ce6e1f4fa3fdb52580bcbce32365de3bca3101319b67567
font_01_sfnt_off00008cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CCA 2864 bytes
SHA-256: 63385d3f60a04e45da78bb8932ae4cb33f92f5868f6d8235bdab4424227a7ed2
font_02_sfnt_off000096ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96AB 18572 bytes
SHA-256: b44bcce2d8515c0d099a66814c088ed689798a3dbc3c1364cf14b7c888151b67

Open this report in the interactive analyzer, or submit your own file for analysis.