Malicious PDF — malware analysis report

Static analysis result for SHA-256 e57102a6ab476efc…

MALICIOUS

PDF

45.1 KB Created: 2021-06-04 00:50:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b995c6c3a1191cc7cf78a7d194ec11f9 SHA-1: d4798438a32f5907c90f6eb100b611aa70561723 SHA-256: e57102a6ab476efc41c180cac0ef8581ea7ea4829fb21c32e62f1a1515ac0357
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with malicious links. It also hosts a large number of external links, many of which point to other PDF documents with SEO-like slugs, suggesting a link farm or content-spinning operation. The primary URL, https://netcdn.online/app/479516143/how-to-get-minecoins-in-minecraft-for-free-game-hack, is likely the entry point for a second-stage download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/479516143/how-to-get-minecoins-in-minecraft-for-free-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/easy-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/play-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox_GM431946152.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_004_off000051da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51DA 28120 bytes
SHA-256: 60aaf7542fbdc3239df449dab17f564b3c2d1d4b01bd9179417ce38ade66f987
font_01_sfnt_off00008f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F24 17872 bytes
SHA-256: d23bbe04ef3196a5fa54f397c57d78b821aa47262b4b410e5e0dbd5db48197bd

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