Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cec1b569392934d…

MALICIOUS

PDF

35.2 KB Created: 2021-06-30 10:53:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b67055ed6e2a4d51ca5ec83f689eae22 SHA-1: d3b035732600484b07861ffbac53791a4a2c825d SHA-256: 1cec1b569392934de829a725b8600dd0727ae8aa73bbfa634ce47dc67d5e2ed1
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 0.9980

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 http://netcdn.co/app/431946152/free-game-card-codes-roblox-2021-game-hack PDF link annotation
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-hacker-report-system_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-free-food_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/hacking-roblox-may-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-mobile-hacks-4-free-com_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/ho-to-get-free-robux-in-roblox-on-the-pc_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-generator-robux-free_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-free-robux-ios-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/codes-for-roblox-weight-lifting-simulator-3-hack-code_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
font_00_sfnt_off0000305b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x305B 22812 bytes
SHA-256: b9328d25d32d47aa66cafa66d04be35192586911eb8965fc32f7f77e2d7cbb4d
font_01_sfnt_off00006343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6343 19484 bytes
SHA-256: 49d0cd4b2d5d92a89411101412901428c5f699f568e8bf5091b04ebf23bac363

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