Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fd1e400001221cc…

MALICIOUS

PDF

52.1 KB Created: 2021-06-11 01:23:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6ad1fd7f61b0d02c6634875691acc527 SHA-1: 25909749a91d078f691db7dcfeb846ceb4c5585c SHA-256: 5fd1e400001221cc2d2c200171a23161837209705c69ac55c3df5a8bdadb05a5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 0.9850

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.tw/app/431946152/working-free-robux-hacks-game-hack PDF link annotation
    • http://guimaq.com.br/images/free-robux-hack-today_GM431946152.pdfIn PDF document text
    • https://guimaq.com.br/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://guimaq.com.br/images/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://guimaq.com.br/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://guimaq.com.br/images/free-code-roblox-animation_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/hacks-para-roblox-descargar-gratis_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/tiktok-free-wala_GM835599320.pdfIn PDF document text
    • http://guimaq.com.br/images/free-to-use-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50A4 39720 bytes
SHA-256: b2990e94b8d732dafe2b43930cf1081b79f1396aef4504f9c540884ebdbf7983
font_01_sfnt_off0000a750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA750 19020 bytes
SHA-256: a679dac58722ee0c2e1608667403dd0b2669703311b55fb587d10fb2528abef5

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