Malicious PDF — malware analysis report

Static analysis result for SHA-256 a44cc761e2aaad5c…

MALICIOUS

PDF

47.6 KB Created: 2021-06-03 08:05:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5f8395e5ac75877decd9077c60dd1ee1 SHA-1: 2d0dc56387e41efbf92584adce76b50cace59553 SHA-256: a44cc761e2aaad5c2408cfa4afde4c797789197c29eb057160a9296bcaecc37a
82 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and generators to entice users into clicking a malicious link. The embedded URL, 'https://netcdn.online/app/479516143/minecraft-games-online-free-no-download-game-hack', likely leads to a site that either hosts further malware or attempts to trick the user into downloading a malicious file. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/479516143/minecraft-games-online-free-no-download-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/pubg-uc-in-cheap-price_GM1330123889.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-website_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/client-minecraft_GM479516143.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_004_off00005358.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5358 24972 bytes
SHA-256: 8b79de94f1151f88be1c210b4341db0f9da3dc9b3364f7e594372e65be86576e
font_01_sfnt_off00008c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C91 2892 bytes
SHA-256: e0a0e7499c3dd10c5114bd1538d6e258e6cb3acdd4f79d9538668087a4bdd2cc
font_02_sfnt_off0000967a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x967A 18548 bytes
SHA-256: 5ca17b28647aef81bcc84b8dc260964849d2cd995c521d110ee9368522ce90b7

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