Malicious PDF — malware analysis report

Static analysis result for SHA-256 94748e4b52da0bc1…

MALICIOUS

PDF

45.6 KB Created: 2021-05-11 21:37:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 80288c1d454a37d6544c44c01b8fa865 SHA-1: f35da6b72c69a36db7e1c9247007c5553e519762 SHA-256: 94748e4b52da0bc14f45b27f37a993fce3f788cfa6f9d5eb1c36fa6be16ee9d7
122 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into clicking a link. This link, 'https://netcdn.xyz/app/406889139/free-coin-master-spins-for-today-game-hack', redirects to a site offering game hacks. The document's structure and embedded links suggest it is part of a phishing campaign aiming to lure users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

Heuristics 5

  • 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.
  • 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.xyz/app/406889139/free-coin-master-spins-for-today-game-hack PDF link annotation
    • http://library.darmaagung.ac.id/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-bobux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/coin-master-free-coins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/roblox-free-pants_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_off00004c2d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C2D 26088 bytes
SHA-256: c808460aac2ae28cab442d0c2e4424dfae71d53e4b0c2b9769264b0a0157e554
font_01_sfnt_off000085ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85CA 2920 bytes
SHA-256: 601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
font_02_sfnt_off00008fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE4 18240 bytes
SHA-256: d9df8dbe390422ec07dea5627d06a62d2b41ea66987ed2cc99465e4bed745e59

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